51425562728115 has 12 divisors (see below), whose sum is σ = 89137642062144. Its totient is φ = 27426966788304.

The previous prime is 51425562728081. The next prime is 51425562728143. The reversal of 51425562728115 is 51182726552415.

It is a happy number.

51425562728115 is a `hidden beast` number, since 5 + 1 + 4 + 2 + 5 + 5 + 627 + 2 + 8 + 1 + 1 + 5 = 666.

It is not a de Polignac number, because 51425562728115 - 2¹⁸ = 51425562465971 is a prime.

It is a super-2 number, since 2×51425562728115² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571395141379 + ... + 571395141468.

It is an arithmetic number, because the mean of its divisors is an integer number (7428136838512).

Almost surely, 2^{51425562728115} is an apocalyptic number.

51425562728115 is a deficient number, since it is larger than the sum of its proper divisors (37712079334029).

51425562728115 is a wasteful number, since it uses less digits than its factorization.

51425562728115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142790282858 (or 1142790282855 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 54.

The spelling of 51425562728115 in words is "fifty-one trillion, four hundred twenty-five billion, five hundred sixty-two million, seven hundred twenty-eight thousand, one hundred fifteen".