12912873672 has 64 divisors (see below), whose sum is σ = 33409958400. Its totient is φ = 4154641920.

The previous prime is 12912873593. The next prime is 12912873709. The reversal of 12912873672 is 27637821921.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267108 + ... + 311724.

It is an arithmetic number, because the mean of its divisors is an integer number (522030600).

Almost surely, 2^12912873672 is an apocalyptic number.

12912873672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12912873672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16704979200).

12912873672 is an abundant number, since it is smaller than the sum of its proper divisors (20497084728).

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

12912873672 is a wasteful number, since it uses less digits than its factorization.

12912873672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45046 (or 45042 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The spelling of 12912873672 in words is "twelve billion, nine hundred twelve million, eight hundred seventy-three thousand, six hundred seventy-two".