12697258400 has 36 divisors (see below), whose sum is σ = 30997184022. Its totient is φ = 5078903040.

The previous prime is 12697258339. The next prime is 12697258493. The reversal of 12697258400 is 485279621.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12213786256 + 483472144 = 110516^2 + 21988^2 .

It is a super-3 number, since 3×12697258400³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 7934987 + ... + 7936586.

Almost surely, 2^12697258400 is an apocalyptic number.

12697258400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12697258400 is an abundant number, since it is smaller than the sum of its proper divisors (18299925622).

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

12697258400 is a wasteful number, since it uses less digits than its factorization.

12697258400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15871593 (or 15871580 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 12697258400 in words is "twelve billion, six hundred ninety-seven million, two hundred fifty-eight thousand, four hundred".