12812379856 has 20 divisors (see below), whose sum is σ = 25624760704. Its totient is φ = 6199538400.

The previous prime is 12812379847. The next prime is 12812379857. The reversal of 12812379856 is 65897321821.

It is a happy number.

12812379856 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812379857) 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, 12915210 + ... + 12916201.

Almost surely, 2^12812379856 is an apocalyptic number.

12812379856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12812379856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12812379856 is a wasteful number, since it uses less digits than its factorization.

12812379856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831450 (or 25831444 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The spelling of 12812379856 in words is "twelve billion, eight hundred twelve million, three hundred seventy-nine thousand, eight hundred fifty-six".