51611156716 has 12 divisors (see below), whose sum is σ = 103222313488. Its totient is φ = 22119067152.

The previous prime is 51611156683. The next prime is 51611156717. The reversal of 51611156716 is 61765111615.

51611156716 is an admirable number.

It is a super-2 number, since 2×51611156716² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51611156717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921627771 + ... + 921627826.

Almost surely, 2^51611156716 is an apocalyptic number.

It is an amenable number.

51611156716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51611156716 is a wasteful number, since it uses less digits than its factorization.

51611156716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843255608 (or 1843255606 counting only the distinct ones).

The product of its digits is 37800, while the sum is 40.

The spelling of 51611156716 in words is "fifty-one billion, six hundred eleven million, one hundred fifty-six thousand, seven hundred sixteen".