51010505915 has 16 divisors (see below), whose sum is σ = 64819922112. Its totient is φ = 38404015104.

The previous prime is 51010505867. The next prime is 51010505933. The reversal of 51010505915 is 51950501015.

It is not a de Polignac number, because 51010505915 - 2¹² = 51010501819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027802 + ... + 1076288.

It is an arithmetic number, because the mean of its divisors is an integer number (4051245132).

Almost surely, 2^51010505915 is an apocalyptic number.

51010505915 is a deficient number, since it is larger than the sum of its proper divisors (13809416197).

51010505915 is a wasteful number, since it uses less digits than its factorization.

51010505915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60886.

The product of its (nonzero) digits is 5625, while the sum is 32.

The spelling of 51010505915 in words is "fifty-one billion, ten million, five hundred five thousand, nine hundred fifteen".