51111006056 has 32 divisors (see below), whose sum is σ = 110694962880. Its totient is φ = 21865670400.

The previous prime is 51111006041. The next prime is 51111006077. The reversal of 51111006056 is 65060011115.

It is a super-2 number, since 2×51111006056² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17081060 + ... + 17084051.

It is an arithmetic number, because the mean of its divisors is an integer number (3459217590).

Almost surely, 2^51111006056 is an apocalyptic number.

It is an amenable number.

51111006056 is an abundant number, since it is smaller than the sum of its proper divisors (59583956824).

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

51111006056 is a wasteful number, since it uses less digits than its factorization.

51111006056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34165145 (or 34165141 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 51111006056 in words is "fifty-one billion, one hundred eleven million, six thousand, fifty-six".