12684031900 has 18 divisors (see below), whose sum is σ = 27524349440. Its totient is φ = 5073612720.

The previous prime is 12684031897. The next prime is 12684031939. The reversal of 12684031900 is 913048621.

It is a super-2 number, since 2×12684031900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63420060 + ... + 63420259.

Almost surely, 2^12684031900 is an apocalyptic number.

12684031900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12684031900 is an abundant number, since it is smaller than the sum of its proper divisors (14840317540).

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

12684031900 is a wasteful number, since it uses less digits than its factorization.

12684031900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126840333 (or 126840326 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 12684031900 in words is "twelve billion, six hundred eighty-four million, thirty-one thousand, nine hundred".