51665526264 has 64 divisors (see below), whose sum is σ = 142301162880. Its totient is φ = 15501200000.

The previous prime is 51665526247. The next prime is 51665526277. The reversal of 51665526264 is 46262556615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942162 + ... + 995489.

It is an arithmetic number, because the mean of its divisors is an integer number (2223455670).

Almost surely, 2^51665526264 is an apocalyptic number.

It is an amenable number.

51665526264 is an abundant number, since it is smaller than the sum of its proper divisors (90635636616).

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

51665526264 is a wasteful number, since it uses less digits than its factorization.

51665526264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937772 (or 1937768 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 48.

The spelling of 51665526264 in words is "fifty-one billion, six hundred sixty-five million, five hundred twenty-six thousand, two hundred sixty-four".