51106816056 has 64 divisors (see below), whose sum is σ = 134519990400. Its totient is φ = 16135590528.

The previous prime is 51106816009. The next prime is 51106816073. The reversal of 51106816056 is 65061860115.

It is a super-2 number, since 2×51106816056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2984190 + ... + 3001266.

It is an arithmetic number, because the mean of its divisors is an integer number (2101874850).

Almost surely, 2^51106816056 is an apocalyptic number.

It is an amenable number.

51106816056 is an abundant number, since it is smaller than the sum of its proper divisors (83413174344).

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

51106816056 is a wasteful number, since it uses less digits than its factorization.

51106816056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23668 (or 23664 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 51106816056 in words is "fifty-one billion, one hundred six million, eight hundred sixteen thousand, fifty-six".