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51975295190 = 25721325573191
BaseRepresentation
bin110000011001111110…
…000001000011010110
311222011020200120012222
4300121332001003112
51322421133421230
635513242542342
73516665501600
oct603176010326
9158136616188
1051975295190
1120051776615
12a0a65079b2
134b94077350
142730bd8170
151542ec76e5
hexc19f810d6

51975295190 has 96 divisors (see below), whose sum is σ = 117284013504. Its totient is φ = 16437738240.

The previous prime is 51975295171. The next prime is 51975295231. The reversal of 51975295190 is 9159257915.

It is a super-2 number, since 2×519752951902 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16286495 + ... + 16289685.

It is an arithmetic number, because the mean of its divisors is an integer number (1221708474).

Almost surely, 251975295190 is an apocalyptic number.

51975295190 is an abundant number, since it is smaller than the sum of its proper divisors (65308718314).

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

51975295190 is a wasteful number, since it uses less digits than its factorization.

51975295190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782 (or 5775 counting only the distinct ones).

The product of its (nonzero) digits is 1275750, while the sum is 53.

The spelling of 51975295190 in words is "fifty-one billion, nine hundred seventy-five million, two hundred ninety-five thousand, one hundred ninety".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 130 182 245 455 490 637 910 1274 2557 3185 3191 5114 6370 6382 12785 15955 17899 22337 25570 31910 33241 35798 41483 44674 66482 82966 89495 111685 125293 156359 166205 178990 207415 223370 232687 250586 290381 312718 332410 414830 465374 580762 626465 781795 1163435 1252930 1451905 1563590 1628809 2032667 2326870 2903810 3257618 4065334 8144045 8159387 10163335 16288090 16318774 20326670 40796935 57115709 81593870 106072031 114231418 212144062 285578545 399809963 530360155 571157090 742504217 799619926 1060720310 1485008434 1999049815 3712521085 3998099630 5197529519 7425042170 10395059038 25987647595 51975295190