55666500015 has 32 divisors (see below), whose sum is σ = 102724047360. Its totient is φ = 25214073984.

The previous prime is 55666499921. The next prime is 55666500023. The reversal of 55666500015 is 51000566655.

It is not a de Polignac number, because 55666500015 - 2⁷ = 55666499887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2420469 + ... + 2443358.

It is an arithmetic number, because the mean of its divisors is an integer number (3210126480).

Almost surely, 2^55666500015 is an apocalyptic number.

55666500015 is a deficient number, since it is larger than the sum of its proper divisors (47057547345).

55666500015 is a wasteful number, since it uses less digits than its factorization.

55666500015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863951.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 55666500015 in words is "fifty-five billion, six hundred sixty-six million, five hundred thousand, fifteen".