55111606615 has 16 divisors (see below), whose sum is σ = 72021398400. Its totient is φ = 40240518912.

The previous prime is 55111606603. The next prime is 55111606633. The reversal of 55111606615 is 51660611155.

55111606615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55111606615 - 2²⁹ = 54574735703 is a prime.

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, 4757535 + ... + 4769104.

It is an arithmetic number, because the mean of its divisors is an integer number (4501337400).

Almost surely, 2^55111606615 is an apocalyptic number.

55111606615 is a deficient number, since it is larger than the sum of its proper divisors (16909791785).

55111606615 is a wasteful number, since it uses less digits than its factorization.

55111606615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9526746.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 55111606615 in words is "fifty-five billion, one hundred eleven million, six hundred six thousand, six hundred fifteen".