12912718695 has 16 divisors (see below), whose sum is σ = 20671580160. Its totient is φ = 6883039904.

The previous prime is 12912718657. The next prime is 12912718697. The reversal of 12912718695 is 59681721921.

It is a cyclic number.

It is not a de Polignac number, because 12912718695 - 2⁹ = 12912718183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12912718697) 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, 205335 + ... + 260744.

It is an arithmetic number, because the mean of its divisors is an integer number (1291973760).

Almost surely, 2^12912718695 is an apocalyptic number.

12912718695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12912718695 is a deficient number, since it is larger than the sum of its proper divisors (7758861465).

12912718695 is a wasteful number, since it uses less digits than its factorization.

12912718695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467934.

The product of its digits is 544320, while the sum is 51.

The spelling of 12912718695 in words is "twelve billion, nine hundred twelve million, seven hundred eighteen thousand, six hundred ninety-five".