51656066056 has 16 divisors (see below), whose sum is σ = 110691570240. Its totient is φ = 22138314000.

The previous prime is 51656066029. The next prime is 51656066071. The reversal of 51656066056 is 65066065615.

It is a junction number, because it is equal to n+sod(n) for n = 51656065997 and 51656066015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461214820 + ... + 461214931.

It is an arithmetic number, because the mean of its divisors is an integer number (6918223140).

Almost surely, 2^51656066056 is an apocalyptic number.

51656066056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51656066056 is an abundant number, since it is smaller than the sum of its proper divisors (59035504184).

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

51656066056 is a wasteful number, since it uses less digits than its factorization.

51656066056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922429764 (or 922429760 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 51656066056 in words is "fifty-one billion, six hundred fifty-six million, sixty-six thousand, fifty-six".