12812379855 has 32 divisors (see below), whose sum is σ = 22505914368. Its totient is φ = 6172483200.

The previous prime is 12812379847. The next prime is 12812379857. The reversal of 12812379855 is 55897321821.

It is not a de Polignac number, because 12812379855 - 2³ = 12812379847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12812379798 and 12812379807.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221391 + ... + 273200.

It is an arithmetic number, because the mean of its divisors is an integer number (703309824).

Almost surely, 2^12812379855 is an apocalyptic number.

12812379855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12812379855 is a deficient number, since it is larger than the sum of its proper divisors (9693534513).

12812379855 is a wasteful number, since it uses less digits than its factorization.

12812379855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494767.

The product of its digits is 1209600, while the sum is 51.

The spelling of 12812379855 in words is "twelve billion, eight hundred twelve million, three hundred seventy-nine thousand, eight hundred fifty-five".