51151231115555 has 8 divisors (see below), whose sum is σ = 63361524994944. Its totient is φ = 39600953121600.

The previous prime is 51151231115549. The next prime is 51151231115629. The reversal of 51151231115555 is 55551113215115.

51151231115555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51151231115555 - 2¹⁶ = 51151231050019 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 165003971186 + ... + 165003971495.

It is an arithmetic number, because the mean of its divisors is an integer number (7920190624368).

Almost surely, 2^{51151231115555} is an apocalyptic number.

51151231115555 is a deficient number, since it is larger than the sum of its proper divisors (12210293879389).

51151231115555 is a wasteful number, since it uses less digits than its factorization.

51151231115555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330007942717.

The product of its digits is 93750, while the sum is 41.

The spelling of 51151231115555 in words is "fifty-one trillion, one hundred fifty-one billion, two hundred thirty-one million, one hundred fifteen thousand, five hundred fifty-five".