51523403422465 has 32 divisors (see below), whose sum is σ = 66702143289600. Its totient is φ = 37980606253824.

The previous prime is 51523403422391. The next prime is 51523403422487. The reversal of 51523403422465 is 56422430432515.

It is a happy number.

It is not a de Polignac number, because 51523403422465 - 2¹¹ = 51523403420417 is a prime.

It is a super-2 number, since 2×51523403422465² (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 31 ways as a sum of consecutive naturals, for example, 407858842 + ... + 407985148.

It is an arithmetic number, because the mean of its divisors is an integer number (2084441977800).

Almost surely, 2^{51523403422465} is an apocalyptic number.

It is an amenable number.

51523403422465 is a deficient number, since it is larger than the sum of its proper divisors (15178739867135).

51523403422465 is a wasteful number, since it uses less digits than its factorization.

51523403422465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137401.

The product of its (nonzero) digits is 3456000, while the sum is 46.

The spelling of 51523403422465 in words is "fifty-one trillion, five hundred twenty-three billion, four hundred three million, four hundred twenty-two thousand, four hundred sixty-five".