51056166615 has 16 divisors (see below), whose sum is σ = 83897701728. Its totient is φ = 26494010496.

The previous prime is 51056166547. The next prime is 51056166619. The reversal of 51056166615 is 51666165015.

It is not a de Polignac number, because 51056166615 - 2¹¹ = 51056164567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056166619) 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, 45995992 + ... + 45997101.

It is an arithmetic number, because the mean of its divisors is an integer number (5243606358).

Almost surely, 2^51056166615 is an apocalyptic number.

51056166615 is a deficient number, since it is larger than the sum of its proper divisors (32841535113).

51056166615 is a wasteful number, since it uses less digits than its factorization.

51056166615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91993138.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 51056166615 in words is "fifty-one billion, fifty-six million, one hundred sixty-six thousand, six hundred fifteen".