55610565515 has 32 divisors (see below), whose sum is σ = 68279754816. Its totient is φ = 43467816960.

The previous prime is 55610565443. The next prime is 55610565553. The reversal of 55610565515 is 51556501655.

It is not a de Polignac number, because 55610565515 - 2¹⁰ = 55610564491 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 45694187 + ... + 45695403.

It is an arithmetic number, because the mean of its divisors is an integer number (2133742338).

Almost surely, 2^55610565515 is an apocalyptic number.

55610565515 is a deficient number, since it is larger than the sum of its proper divisors (12669189301).

55610565515 is a wasteful number, since it uses less digits than its factorization.

55610565515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 55610565515 in words is "fifty-five billion, six hundred ten million, five hundred sixty-five thousand, five hundred fifteen".