12456039612 has 12 divisors (see below), whose sum is σ = 29064092456. Its totient is φ = 4152013200.

The previous prime is 12456039611. The next prime is 12456039671. The reversal of 12456039612 is 21693065421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12456039612² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456039611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519001639 + ... + 519001662.

Almost surely, 2^12456039612 is an apocalyptic number.

12456039612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12456039612 is an abundant number, since it is smaller than the sum of its proper divisors (16608052844).

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

12456039612 is a wasteful number, since it uses less digits than its factorization.

12456039612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038003308 (or 1038003306 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 12456039612 in words is "twelve billion, four hundred fifty-six million, thirty-nine thousand, six hundred twelve".