55600611660 has 72 divisors (see below), whose sum is σ = 183987485136. Its totient is φ = 13478935680.

The previous prime is 55600611653. The next prime is 55600611667. The reversal of 55600611660 is 6611600655.

It is an interprime number because it is at equal distance from previous prime (55600611653) and next prime (55600611667).

It is a super-2 number, since 2×55600611660² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55600611667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14038579 + ... + 14042538.

It is an arithmetic number, because the mean of its divisors is an integer number (2555381738).

Almost surely, 2^55600611660 is an apocalyptic number.

It is an amenable number.

55600611660 is an abundant number, since it is smaller than the sum of its proper divisors (128386873476).

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

55600611660 is a wasteful number, since it uses less digits than its factorization.

55600611660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28081143 (or 28081138 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 55600611660 in words is "fifty-five billion, six hundred million, six hundred eleven thousand, six hundred sixty".