12365555100 has 72 divisors (see below), whose sum is σ = 35788959360. Its totient is φ = 3296441280.

The previous prime is 12365555089. The next prime is 12365555117. The reversal of 12365555100 is 155556321.

It is a super-2 number, since 2×12365555100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1639939 + ... + 1647461.

It is an arithmetic number, because the mean of its divisors is an integer number (497068880).

Almost surely, 2^12365555100 is an apocalyptic number.

12365555100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12365555100 is an abundant number, since it is smaller than the sum of its proper divisors (23423404260).

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

12365555100 is a wasteful number, since it uses less digits than its factorization.

12365555100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019 (or 13012 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 12365555100 in words is "twelve billion, three hundred sixty-five million, five hundred fifty-five thousand, one hundred".