12812591408 has 20 divisors (see below), whose sum is σ = 24847059240. Its totient is φ = 6400447104.

The previous prime is 12812591353. The next prime is 12812591411. The reversal of 12812591408 is 80419521821.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347438 + ... + 382541.

It is an arithmetic number, because the mean of its divisors is an integer number (1242352962).

Almost surely, 2^12812591408 is an apocalyptic number.

It is an amenable number.

12812591408 is a deficient number, since it is larger than the sum of its proper divisors (12034467832).

12812591408 is a wasteful number, since it uses less digits than its factorization.

12812591408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731084 (or 731078 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 12812591408 in words is "twelve billion, eight hundred twelve million, five hundred ninety-one thousand, four hundred eight".