12637455605 has 4 divisors (see below), whose sum is σ = 15164946732. Its totient is φ = 10109964480.

The previous prime is 12637455581. The next prime is 12637455659. The reversal of 12637455605 is 50655473621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6043041169 + 6594414436 = 77737^2 + 81206^2 .

It is not a de Polignac number, because 12637455605 - 2¹⁸ = 12637193461 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1263745556 + ... + 1263745565.

It is an arithmetic number, because the mean of its divisors is an integer number (3791236683).

Almost surely, 2^12637455605 is an apocalyptic number.

It is an amenable number.

12637455605 is a deficient number, since it is larger than the sum of its proper divisors (2527491127).

12637455605 is an equidigital number, since it uses as much as digits as its factorization.

12637455605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527491126.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 12637455605 in words is "twelve billion, six hundred thirty-seven million, four hundred fifty-five thousand, six hundred five".