55133185100 has 36 divisors (see below), whose sum is σ = 136730300784. Its totient is φ = 18902806080.

The previous prime is 55133185099. The next prime is 55133185183. The reversal of 55133185100 is 158133155.

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, 39380147 + ... + 39381546.

Almost surely, 2^55133185100 is an apocalyptic number.

55133185100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55133185100 is an abundant number, since it is smaller than the sum of its proper divisors (81597115684).

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

55133185100 is a wasteful number, since it uses less digits than its factorization.

55133185100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78761714 (or 78761707 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 55133185100 in words is "fifty-five billion, one hundred thirty-three million, one hundred eighty-five thousand, one hundred".