12640974305 has 8 divisors (see below), whose sum is σ = 15181955712. Its totient is φ = 10104255088.

The previous prime is 12640974299. The next prime is 12640974371. The reversal of 12640974305 is 50347904621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12640974305 - 2¹⁴ = 12640957921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059017 + ... + 1070886.

It is an arithmetic number, because the mean of its divisors is an integer number (1897744464).

Almost surely, 2^12640974305 is an apocalyptic number.

It is an amenable number.

12640974305 is a deficient number, since it is larger than the sum of its proper divisors (2540981407).

12640974305 is a wasteful number, since it uses less digits than its factorization.

12640974305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131095.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 12640974305 in words is "twelve billion, six hundred forty million, nine hundred seventy-four thousand, three hundred five".