51656735826423 has 48 divisors (see below), whose sum is σ = 92073973555200. Its totient is φ = 27176366521152.

The previous prime is 51656735826307. The next prime is 51656735826457. The reversal of 51656735826423 is 32462853765615.

51656735826423 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 6 + 7 + 3 + 582 + 6 + 42 + 3 = 666.

It is not a de Polignac number, because 51656735826423 - 2¹⁸ = 51656735564279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51656735826023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82026973 + ... + 82654326.

It is an arithmetic number, because the mean of its divisors is an integer number (1918207782400).

Almost surely, 2^{51656735826423} is an apocalyptic number.

51656735826423 is a deficient number, since it is larger than the sum of its proper divisors (40417237728777).

51656735826423 is a wasteful number, since it uses less digits than its factorization.

51656735826423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164681708 (or 164681705 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 63.

The spelling of 51656735826423 in words is "fifty-one trillion, six hundred fifty-six billion, seven hundred thirty-five million, eight hundred twenty-six thousand, four hundred twenty-three".