51000510000165 has 64 divisors (see below), whose sum is σ = 89363640517632. Its totient is φ = 24631865280000.

The previous prime is 51000510000163. The next prime is 51000510000191. The reversal of 51000510000165 is 56100001500015.

It is not a de Polignac number, because 51000510000165 - 2¹ = 51000510000163 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000510000161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139949722 + ... + 140313668.

It is an arithmetic number, because the mean of its divisors is an integer number (1396306883088).

Almost surely, 2^{51000510000165} is an apocalyptic number.

51000510000165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51000510000165 is a deficient number, since it is larger than the sum of its proper divisors (38363130517467).

51000510000165 is a wasteful number, since it uses less digits than its factorization.

51000510000165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367250.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 51000510000165 in words is "fifty-one trillion, five hundred ten million, one hundred sixty-five", and thus it is an aban number.