12969688400 has 30 divisors (see below), whose sum is σ = 31159677342. Its totient is φ = 5187875200.

The previous prime is 12969688373. The next prime is 12969688421. The reversal of 12969688400 is 488696921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2684483344 + 10285205056 = 51812^2 + 101416^2 .

It is a congruent number.

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, 16211711 + ... + 16212510.

Almost surely, 2^12969688400 is an apocalyptic number.

12969688400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12969688400 is an abundant number, since it is smaller than the sum of its proper divisors (18189988942).

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

12969688400 is a wasteful number, since it uses less digits than its factorization.

12969688400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32424239 (or 32424228 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 12969688400 in words is "twelve billion, nine hundred sixty-nine million, six hundred eighty-eight thousand, four hundred".