51515510156 has 24 divisors (see below), whose sum is σ = 99321541200. Its totient is φ = 23184296000.

The previous prime is 51515510153. The next prime is 51515510177. The reversal of 51515510156 is 65101551515.

It is not an unprimeable number, because it can be changed into a prime (51515510153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5791631 + ... + 5800518.

It is an arithmetic number, because the mean of its divisors is an integer number (4138397550).

Almost surely, 2^51515510156 is an apocalyptic number.

It is an amenable number.

51515510156 is a deficient number, since it is larger than the sum of its proper divisors (47806031044).

51515510156 is a wasteful number, since it uses less digits than its factorization.

51515510156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11592265 (or 11592263 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 51515510156 in words is "fifty-one billion, five hundred fifteen million, five hundred ten thousand, one hundred fifty-six".