12412865856 has 56 divisors (see below), whose sum is σ = 32863458784. Its totient is φ = 4134965760.

The previous prime is 12412865821. The next prime is 12412865879. The reversal of 12412865856 is 65856821421.

12412865856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12412865856² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 291291 + ... + 331173.

Almost surely, 2^12412865856 is an apocalyptic number.

12412865856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12412865856 is an abundant number, since it is smaller than the sum of its proper divisors (20450592928).

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

12412865856 is a wasteful number, since it uses less digits than its factorization.

12412865856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41519 (or 41509 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The spelling of 12412865856 in words is "twelve billion, four hundred twelve million, eight hundred sixty-five thousand, eight hundred fifty-six".