12964691917 has 4 divisors (see below), whose sum is σ = 12965546880. Its totient is φ = 12963836956.

The previous prime is 12964691903. The next prime is 12964691921. The reversal of 12964691917 is 71919646921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12964691917 - 2¹¹ = 12964689869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12964691977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404317 + ... + 435202.

It is an arithmetic number, because the mean of its divisors is an integer number (3241386720).

Almost surely, 2^12964691917 is an apocalyptic number.

It is an amenable number.

12964691917 is a deficient number, since it is larger than the sum of its proper divisors (854963).

12964691917 is an equidigital number, since it uses as much as digits as its factorization.

12964691917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854962.

The product of its digits is 1469664, while the sum is 55.

The spelling of 12964691917 in words is "twelve billion, nine hundred sixty-four million, six hundred ninety-one thousand, nine hundred seventeen".