12496447872 has 48 divisors (see below), whose sum is σ = 35959833780. Its totient is φ = 4165482240.

The previous prime is 12496447819. The next prime is 12496447897. The reversal of 12496447872 is 27874469421.

12496447872 is a `hidden beast` number, since 1 + 2 + 49 + 64 + 478 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12496447872² (a number of 21 digits) contains 22 as substring.

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, 5422654 + ... + 5424957.

Almost surely, 2^12496447872 is an apocalyptic number.

12496447872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12496447872 is an abundant number, since it is smaller than the sum of its proper divisors (23463385908).

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

12496447872 is a wasteful number, since it uses less digits than its factorization.

12496447872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10847631 (or 10847616 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 12496447872 in words is "twelve billion, four hundred ninety-six million, four hundred forty-seven thousand, eight hundred seventy-two".