12971952695 has 16 divisors (see below), whose sum is σ = 17047890720. Its totient is φ = 9416924544.

The previous prime is 12971952691. The next prime is 12971952811. The reversal of 12971952695 is 59625917921.

It is a cyclic number.

It is not a de Polignac number, because 12971952695 - 2² = 12971952691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12971952695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12971952691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1687424 + ... + 1695093.

It is an arithmetic number, because the mean of its divisors is an integer number (1065493170).

Almost surely, 2^12971952695 is an apocalyptic number.

12971952695 is a deficient number, since it is larger than the sum of its proper divisors (4075938025).

12971952695 is a wasteful number, since it uses less digits than its factorization.

12971952695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382594.

The product of its digits is 3061800, while the sum is 56.

The spelling of 12971952695 in words is "twelve billion, nine hundred seventy-one million, nine hundred fifty-two thousand, six hundred ninety-five".