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51374231960 = 23529331133801
BaseRepresentation
bin101111110110001001…
…001001000110011000
311220121100200101110212
4233312021021012120
51320203300410320
635333452030252
73466046523632
oct576611110630
9156540611425
1051374231960
111a873461947
129b59162388
134ac969882c
1426b5055a52
15150a3499c5
hexbf6249198

51374231960 has 64 divisors (see below), whose sum is σ = 119940112800. Its totient is φ = 19780992000.

The previous prime is 51374231941. The next prime is 51374231969. The reversal of 51374231960 is 6913247315.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51374231969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317060 + ... + 450860.

Almost surely, 251374231960 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 51374231960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59970056400).

51374231960 is an abundant number, since it is smaller than the sum of its proper divisors (68565880840).

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

51374231960 is a wasteful number, since it uses less digits than its factorization.

51374231960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134172 (or 134168 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 51374231960 in words is "fifty-one billion, three hundred seventy-four million, two hundred thirty-one thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 29 40 58 116 145 232 290 331 580 662 1160 1324 1655 2648 3310 6620 9599 13240 19198 38396 47995 76792 95990 133801 191980 267602 383960 535204 669005 1070408 1338010 2676020 3880229 5352040 7760458 15520916 19401145 31041832 38802290 44288131 77604580 88576262 155209160 177152524 221440655 354305048 442881310 885762620 1284355799 1771525240 2568711598 5137423196 6421778995 10274846392 12843557990 25687115980 51374231960