12693690500 has 24 divisors (see below), whose sum is σ = 27723021144. Its totient is φ = 5077476000.

The previous prime is 12693690479. The next prime is 12693690539. The reversal of 12693690500 is 509639621.

It can be written as a sum of positive squares in 4 ways, for example, as 237344836 + 12456345664 = 15406^2 + 111608^2 .

It is a super-2 number, since 2×12693690500² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12693191 + ... + 12694190.

It is an arithmetic number, because the mean of its divisors is an integer number (1155125881).

Almost surely, 2^12693690500 is an apocalyptic number.

12693690500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12693690500 is an abundant number, since it is smaller than the sum of its proper divisors (15029330644).

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

12693690500 is a wasteful number, since it uses less digits than its factorization.

12693690500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387400 (or 25387388 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 41.

The spelling of 12693690500 in words is "twelve billion, six hundred ninety-three million, six hundred ninety thousand, five hundred".