51566602264 has 32 divisors (see below), whose sum is σ = 97399898640. Its totient is φ = 25593984000.

The previous prime is 51566602259. The next prime is 51566602277. The reversal of 51566602264 is 46220666515.

It is a happy number.

It is a super-2 number, since 2×51566602264² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51566602264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560739 + ... + 646189.

Almost surely, 2^51566602264 is an apocalyptic number.

It is an amenable number.

51566602264 is a deficient number, since it is larger than the sum of its proper divisors (45833296376).

51566602264 is a wasteful number, since it uses less digits than its factorization.

51566602264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86011 (or 86007 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 51566602264 in words is "fifty-one billion, five hundred sixty-six million, six hundred two thousand, two hundred sixty-four".