51116066511656 has 16 divisors (see below), whose sum is σ = 96997355128800. Its totient is φ = 25250105143984.

The previous prime is 51116066511649. The next prime is 51116066511689. The reversal of 51116066511656 is 65611566061115.

It is a super-2 number, since 2×51116066511656² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38491013276 + ... + 38491014603.

It is an arithmetic number, because the mean of its divisors is an integer number (6062334695550).

Almost surely, 2^{51116066511656} is an apocalyptic number.

It is an amenable number.

51116066511656 is a deficient number, since it is larger than the sum of its proper divisors (45881288617144).

51116066511656 is a wasteful number, since it uses less digits than its factorization.

51116066511656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76982027968 (or 76982027964 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 51116066511656 in words is "fifty-one trillion, one hundred sixteen billion, sixty-six million, five hundred eleven thousand, six hundred fifty-six".