55510565660 has 48 divisors (see below), whose sum is σ = 127326874752. Its totient is φ = 20160705600.

The previous prime is 55510565633. The next prime is 55510565713. The reversal of 55510565660 is 6656501555.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22859 + ... + 333981.

It is an arithmetic number, because the mean of its divisors is an integer number (2652643224).

Almost surely, 2^55510565660 is an apocalyptic number.

It is an amenable number.

55510565660 is an abundant number, since it is smaller than the sum of its proper divisors (71816309092).

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

55510565660 is a wasteful number, since it uses less digits than its factorization.

55510565660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311954 (or 311952 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 55510565660 in words is "fifty-five billion, five hundred ten million, five hundred sixty-five thousand, six hundred sixty".