51116515055015 has 16 divisors (see below), whose sum is σ = 64011631200768. Its totient is φ = 39112273538976.

The previous prime is 51116515054963. The next prime is 51116515055033. The reversal of 51116515055015 is 51055051561115.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51116515055015 is a prime.

It is a super-2 number, since 2×51116515055015² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 15370379 + ... + 18397868.

It is an arithmetic number, because the mean of its divisors is an integer number (4000726950048).

Almost surely, 2^{51116515055015} is an apocalyptic number.

51116515055015 is a deficient number, since it is larger than the sum of its proper divisors (12895116145753).

51116515055015 is a wasteful number, since it uses less digits than its factorization.

51116515055015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33781438.

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

The spelling of 51116515055015 in words is "fifty-one trillion, one hundred sixteen billion, five hundred fifteen million, fifty-five thousand, fifteen".