12415539612 has 48 divisors (see below), whose sum is σ = 33118023680. Its totient is φ = 3546234432.

The previous prime is 12415539593. The next prime is 12415539623. The reversal of 12415539612 is 21693551421.

It is a happy number.

It is a super-2 number, since 2×12415539612² (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 15 ways as a sum of consecutive naturals, for example, 285189 + ... + 325827.

Almost surely, 2^12415539612 is an apocalyptic number.

12415539612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12415539612 is an abundant number, since it is smaller than the sum of its proper divisors (20702484068).

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

12415539612 is a wasteful number, since it uses less digits than its factorization.

12415539612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44290 (or 44288 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The spelling of 12415539612 in words is "twelve billion, four hundred fifteen million, five hundred thirty-nine thousand, six hundred twelve".