12639050047695 has 64 divisors (see below), whose sum is σ = 21915600768000. Its totient is φ = 6198256567296.

The previous prime is 12639050047607. The next prime is 12639050047697. The reversal of 12639050047695 is 59674005093621.

It is not a de Polignac number, because 12639050047695 - 2¹¹ = 12639050045647 is a prime.

It is a super-2 number, since 2×12639050047695² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12639050047697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2847646 + ... + 5778164.

It is an arithmetic number, because the mean of its divisors is an integer number (342431262000).

Almost surely, 2^{12639050047695} is an apocalyptic number.

12639050047695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12639050047695 is a deficient number, since it is larger than the sum of its proper divisors (9276550720305).

12639050047695 is a wasteful number, since it uses less digits than its factorization.

12639050047695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930992.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 12639050047695 in words is "twelve trillion, six hundred thirty-nine billion, fifty million, forty-seven thousand, six hundred ninety-five".