51511051151115 has 16 divisors (see below), whose sum is σ = 82524856999200. Its totient is φ = 27436835561472.

The previous prime is 51511051151111. The next prime is 51511051151149. The reversal of 51511051151115 is 51115115011515.

It is a happy number.

It is not a de Polignac number, because 51511051151115 - 2² = 51511051151111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51511051151111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2232803860 + ... + 2232826929.

It is an arithmetic number, because the mean of its divisors is an integer number (5157803562450).

Almost surely, 2^{51511051151115} is an apocalyptic number.

51511051151115 is a deficient number, since it is larger than the sum of its proper divisors (31013805848085).

51511051151115 is a wasteful number, since it uses less digits than its factorization.

51511051151115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465631566.

The product of its (nonzero) digits is 3125, while the sum is 33.

The spelling of 51511051151115 in words is "fifty-one trillion, five hundred eleven billion, fifty-one million, one hundred fifty-one thousand, one hundred fifteen".