12457799172100 has 36 divisors (see below), whose sum is σ = 27312119319604. Its totient is φ = 4931747297280.

The previous prime is 12457799172059. The next prime is 12457799172163. The reversal of 12457799172100 is 127199775421.

It can be written as a sum of positive squares in 6 ways, for example, as 209927079684 + 12247872092416 = 458178^2 + 3499696^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642144897 + ... + 642164296.

Almost surely, 2^{12457799172100} is an apocalyptic number.

12457799172100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12457799172100 is an abundant number, since it is smaller than the sum of its proper divisors (14854320147504).

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

12457799172100 is a wasteful number, since it uses less digits than its factorization.

12457799172100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284309304 (or 1284309297 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 55.

The spelling of 12457799172100 in words is "twelve trillion, four hundred fifty-seven billion, seven hundred ninety-nine million, one hundred seventy-two thousand, one hundred".