12493922640 has 40 divisors (see below), whose sum is σ = 38731160928. Its totient is φ = 3331712640.

The previous prime is 12493922629. The next prime is 12493922671. The reversal of 12493922640 is 4622939421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12493922592 and 12493922601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26028766 + ... + 26029245.

Almost surely, 2^12493922640 is an apocalyptic number.

12493922640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12493922640 is an abundant number, since it is smaller than the sum of its proper divisors (26237238288).

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

12493922640 is a wasteful number, since it uses less digits than its factorization.

12493922640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52058027 (or 52058021 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 12493922640 in words is "twelve billion, four hundred ninety-three million, nine hundred twenty-two thousand, six hundred forty".