55005616656 has 60 divisors (see below), whose sum is σ = 158099867692. Its totient is φ = 17839657728.

The previous prime is 55005616609. The next prime is 55005616663. The reversal of 55005616656 is 65661650055.

It can be written as a sum of positive squares in 2 ways, for example, as 43773008400 + 11232608256 = 209220^2 + 105984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5156611 + ... + 5167266.

Almost surely, 2^55005616656 is an apocalyptic number.

It is an amenable number.

55005616656 is an abundant number, since it is smaller than the sum of its proper divisors (103094251036).

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

55005616656 is a wasteful number, since it uses less digits than its factorization.

55005616656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10323928 (or 10323919 counting only the distinct ones).

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

The spelling of 55005616656 in words is "fifty-five billion, five million, six hundred sixteen thousand, six hundred fifty-six".