55015660656 has 60 divisors (see below), whose sum is σ = 167964483960. Its totient is φ = 16671411840.

The previous prime is 55015660631. The next prime is 55015660657. The reversal of 55015660656 is 65606651055.

It is a super-2 number, since 2×55015660656² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55015660657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17364471 + ... + 17367638.

It is an arithmetic number, because the mean of its divisors is an integer number (2799408066).

Almost surely, 2^55015660656 is an apocalyptic number.

It is an amenable number.

55015660656 is an abundant number, since it is smaller than the sum of its proper divisors (112948823304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55015660656 is a wasteful number, since it uses less digits than its factorization.

55015660656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34732134 (or 34732125 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 55015660656 in words is "fifty-five billion, fifteen million, six hundred sixty thousand, six hundred fifty-six".