51157241512 has 16 divisors (see below), whose sum is σ = 103298276340. Its totient is φ = 23611034496.

The previous prime is 51157241489. The next prime is 51157241537. The reversal of 51157241512 is 21514275115.

It can be written as a sum of positive squares in 2 ways, for example, as 42884611396 + 8272630116 = 207086^2 + 90954^2 .

It is a super-2 number, since 2×51157241512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245948173 + ... + 245948380.

Almost surely, 2^51157241512 is an apocalyptic number.

51157241512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51157241512 is an abundant number, since it is smaller than the sum of its proper divisors (52141034828).

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

51157241512 is a wasteful number, since it uses less digits than its factorization.

51157241512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491896572 (or 491896568 counting only the distinct ones).

The product of its digits is 14000, while the sum is 34.

The spelling of 51157241512 in words is "fifty-one billion, one hundred fifty-seven million, two hundred forty-one thousand, five hundred twelve".