55505500660 has 24 divisors (see below), whose sum is σ = 122696370720. Its totient is φ = 21033663264.

The previous prime is 55505500643. The next prime is 55505500669. The reversal of 55505500660 is 6600550555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505500669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73033174 + ... + 73033933.

It is an arithmetic number, because the mean of its divisors is an integer number (5112348780).

Almost surely, 2^55505500660 is an apocalyptic number.

It is an amenable number.

55505500660 is an abundant number, since it is smaller than the sum of its proper divisors (67190870060).

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

55505500660 is a wasteful number, since it uses less digits than its factorization.

55505500660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146067135 (or 146067133 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 55505500660 in words is "fifty-five billion, five hundred five million, five hundred thousand, six hundred sixty".