51651166065164 has 24 divisors (see below), whose sum is σ = 90785411455200. Its totient is φ = 25712479952640.

The previous prime is 51651166065133. The next prime is 51651166065193. The reversal of 51651166065164 is 46156066115615.

It is a super-2 number, since 2×51651166065164² (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 7 ways as a sum of consecutive naturals, for example, 81833417 + ... + 82462175.

It is an arithmetic number, because the mean of its divisors is an integer number (3782725477300).

Almost surely, 2^{51651166065164} is an apocalyptic number.

It is an amenable number.

51651166065164 is a deficient number, since it is larger than the sum of its proper divisors (39134245390036).

51651166065164 is a wasteful number, since it uses less digits than its factorization.

51651166065164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718673 (or 718671 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 51651166065164 in words is "fifty-one trillion, six hundred fifty-one billion, one hundred sixty-six million, sixty-five thousand, one hundred sixty-four".