55911664100 has 18 divisors (see below), whose sum is σ = 121328311314. Its totient is φ = 22364665600.

The previous prime is 55911664079. The next prime is 55911664129. The reversal of 55911664100 is 146611955.

It can be written as a sum of positive squares in 3 ways, for example, as 2433251584 + 53478412516 = 49328^2 + 231254^2 .

It is a super-2 number, since 2×55911664100² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279558221 + ... + 279558420.

Almost surely, 2^55911664100 is an apocalyptic number.

55911664100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55911664100 is an abundant number, since it is smaller than the sum of its proper divisors (65416647214).

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

55911664100 is a wasteful number, since it uses less digits than its factorization.

55911664100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559116655 (or 559116648 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 55911664100 in words is "fifty-five billion, nine hundred eleven million, six hundred sixty-four thousand, one hundred".