51000165561075 has 24 divisors (see below), whose sum is σ = 84321501702000. Its totient is φ = 27199692178560.

The previous prime is 51000165561049. The next prime is 51000165561089. The reversal of 51000165561075 is 57016556100015.

51000165561075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51000165561075 - 2⁸ = 51000165560819 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269241 + ... + 10103109.

It is an arithmetic number, because the mean of its divisors is an integer number (3513395904250).

Almost surely, 2^{51000165561075} is an apocalyptic number.

51000165561075 is a deficient number, since it is larger than the sum of its proper divisors (33321336140925).

51000165561075 is a wasteful number, since it uses less digits than its factorization.

51000165561075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9903031 (or 9903026 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 51000165561075 in words is "fifty-one trillion, one hundred sixty-five million, five hundred sixty-one thousand, seventy-five".