55115616660 has 96 divisors (see below), whose sum is σ = 167665800960. Its totient is φ = 13446838272.

The previous prime is 55115616643. The next prime is 55115616671. The reversal of 55115616660 is 6661651155.

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, 224520 + ... + 400799.

It is an arithmetic number, because the mean of its divisors is an integer number (1746518760).

Almost surely, 2^55115616660 is an apocalyptic number.

It is an amenable number.

55115616660 is an abundant number, since it is smaller than the sum of its proper divisors (112550184300).

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

55115616660 is a wasteful number, since it uses less digits than its factorization.

55115616660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625457 (or 625455 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 55115616660 in words is "fifty-five billion, one hundred fifteen million, six hundred sixteen thousand, six hundred sixty".