12806594640 has 160 divisors (see below), whose sum is σ = 50413320960. Its totient is φ = 2927218176.

The previous prime is 12806594629. The next prime is 12806594651. The reversal of 12806594640 is 4649560821.

12806594640 is a `hidden beast` number, since 12 + 8 + 0 + 6 + 594 + 6 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (12806594629) and next prime (12806594651).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408379 + ... + 438618.

It is an arithmetic number, because the mean of its divisors is an integer number (315083256).

Almost surely, 2^12806594640 is an apocalyptic number.

12806594640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12806594640 is an abundant number, since it is smaller than the sum of its proper divisors (37606726320).

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

12806594640 is a wasteful number, since it uses less digits than its factorization.

12806594640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847026 (or 847014 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 12806594640 in words is "twelve billion, eight hundred six million, five hundred ninety-four thousand, six hundred forty".