51156304155 has 96 divisors (see below), whose sum is σ = 99533491200. Its totient is φ = 24087248640.

The previous prime is 51156304139. The next prime is 51156304223. The reversal of 51156304155 is 55140365115.

51156304155 is a `hidden beast` number, since 5 + 1 + 1 + 5 + 630 + 4 + 15 + 5 = 666.

51156304155 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 51156304155 - 2⁴ = 51156304139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10968354 + ... + 10973016.

It is an arithmetic number, because the mean of its divisors is an integer number (1036807200).

Almost surely, 2^51156304155 is an apocalyptic number.

51156304155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51156304155 is a deficient number, since it is larger than the sum of its proper divisors (48377187045).

51156304155 is a wasteful number, since it uses less digits than its factorization.

51156304155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 51156304155 in words is "fifty-one billion, one hundred fifty-six million, three hundred four thousand, one hundred fifty-five".