51425506366257 has 32 divisors (see below), whose sum is σ = 70063974134784. Its totient is φ = 33543651758400.

The previous prime is 51425506366249. The next prime is 51425506366259. The reversal of 51425506366257 is 75266360552415.

It is a happy number.

It is not a de Polignac number, because 51425506366257 - 2³ = 51425506366249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51425506366197 and 51425506366206.

It is not an unprimeable number, because it can be changed into a prime (51425506366259) 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, 13946463 + ... + 17243979.

It is an arithmetic number, because the mean of its divisors is an integer number (2189499191712).

Almost surely, 2^{51425506366257} is an apocalyptic number.

It is an amenable number.

51425506366257 is a deficient number, since it is larger than the sum of its proper divisors (18638467768527).

51425506366257 is a wasteful number, since it uses less digits than its factorization.

51425506366257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298149.

The product of its (nonzero) digits is 45360000, while the sum is 57.

The spelling of 51425506366257 in words is "fifty-one trillion, four hundred twenty-five billion, five hundred six million, three hundred sixty-six thousand, two hundred fifty-seven".