12635405695 has 36 divisors (see below), whose sum is σ = 17317610856. Its totient is φ = 8776509280.

The previous prime is 12635405683. The next prime is 12635405701. The reversal of 12635405695 is 59650453621.

It is not a de Polignac number, because 12635405695 - 2⁵ = 12635405663 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 35 ways as a sum of consecutive naturals, for example, 19173276 + ... + 19173934.

It is an arithmetic number, because the mean of its divisors is an integer number (481044746).

Almost surely, 2^12635405695 is an apocalyptic number.

12635405695 is a deficient number, since it is larger than the sum of its proper divisors (4682205161).

12635405695 is an frugal number, since it uses more digits than its factorization.

12635405695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 12635405695 in words is "twelve billion, six hundred thirty-five million, four hundred five thousand, six hundred ninety-five".