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48520993788 = 22333121094289
BaseRepresentation
bin101101001100000100…
…111001101111111100
311122020111210212112000
4231030010321233330
51243332333300123
634142405142300
73335252433201
oct551404715774
9148214725460
1048520993788
1119639921873
1294a16ba990
13476351b317
1424c4133ca8
1513deae5b43
hexb4c139bfc

48520993788 has 144 divisors (see below), whose sum is σ = 131207076000. Its totient is φ = 15504721920.

The previous prime is 48520993783. The next prime is 48520993799. The reversal of 48520993788 is 88739902584.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48520993783) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11310748 + ... + 11315036.

It is an arithmetic number, because the mean of its divisors is an integer number (911160250).

Almost surely, 248520993788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48520993788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65603538000).

48520993788 is an abundant number, since it is smaller than the sum of its proper divisors (82686082212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48520993788 is a wasteful number, since it uses less digits than its factorization.

48520993788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473 (or 4434 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 48520993788 in words is "forty-eight billion, five hundred twenty million, nine hundred ninety-three thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 31 36 54 62 93 108 109 124 186 218 279 327 372 436 558 654 837 961 981 1116 1308 1674 1922 1962 2883 2943 3348 3379 3844 3924 4289 5766 5886 6758 8578 8649 10137 11532 11772 12867 13516 17156 17298 20274 25734 25947 30411 34596 38601 40548 51468 51894 60822 77202 91233 103788 104749 115803 121644 132959 154404 182466 209498 231606 265918 314247 364932 398877 418996 463212 467501 531836 628494 797754 935002 942741 1196631 1256988 1402503 1595508 1870004 1885482 2393262 2805006 2828223 3589893 3770964 4121729 4207509 4786524 5610012 5656446 7179786 8243458 8415018 11312892 12365187 12622527 14359572 14492531 16486916 16830036 24730374 25245054 28985062 37095561 43477593 49460748 50490108 57970124 74191122 86955186 111286683 130432779 148382244 173910372 222573366 260865558 391298337 445146732 449268461 521731116 782596674 898536922 1347805383 1565193348 1797073844 2695610766 4043416149 5391221532 8086832298 12130248447 16173664596 24260496894 48520993788