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47790521480 = 235132310139563
BaseRepresentation
bin101100100000100010…
…010111110010001000
311120100121022000220002
4230200202113302020
51240333333141410
633542112422132
73311202505262
oct544042276210
9146317260802
1047790521480
11192a455a149
129318b47948
13467809cca0
142455106b32
15139a9047a5
hexb20897c88

47790521480 has 128 divisors (see below), whose sum is σ = 122034366720. Its totient is φ = 16710988800.

The previous prime is 47790521473. The next prime is 47790521489. The reversal of 47790521480 is 8412509774.

It is not an unprimeable number, because it can be changed into a prime (47790521489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188179 + ... + 1227741.

It is an arithmetic number, because the mean of its divisors is an integer number (953393490).

Almost surely, 247790521480 is an apocalyptic number.

47790521480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47790521480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61017183360).

47790521480 is an abundant number, since it is smaller than the sum of its proper divisors (74243845240).

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

47790521480 is a wasteful number, since it uses less digits than its factorization.

47790521480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39711 (or 39707 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 47790521480 in words is "forty-seven billion, seven hundred ninety million, five hundred twenty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 23 26 40 46 52 65 92 101 104 115 130 184 202 230 260 299 404 460 505 520 598 808 920 1010 1196 1313 1495 2020 2323 2392 2626 2990 4040 4646 5252 5980 6565 9292 10504 11615 11960 13130 18584 23230 26260 30199 39563 46460 52520 60398 79126 92920 120796 150995 158252 197815 241592 301990 316504 395630 514319 603980 791260 909949 1028638 1207960 1582520 1819898 2057276 2571595 3639796 3995863 4114552 4549745 5143190 7279592 7991726 9099490 10286380 11829337 15983452 18198980 19979315 20572760 23658674 31966904 36397960 39958630 47317348 51946219 59146685 79917260 91904849 94634696 103892438 118293370 159834520 183809698 207784876 236586740 259731095 367619396 415569752 459524245 473173480 519462190 735238792 919048490 1038924380 1194763037 1838096980 2077848760 2389526074 3676193960 4779052148 5973815185 9558104296 11947630370 23895260740 47790521480