12966609723 has 8 divisors (see below), whose sum is σ = 17846516736. Its totient is φ = 8365554600.

The previous prime is 12966609671. The next prime is 12966609737. The reversal of 12966609723 is 32790666921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12966609723 - 2⁹ = 12966609211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12966607723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69712863 + ... + 69713048.

It is an arithmetic number, because the mean of its divisors is an integer number (2230814592).

Almost surely, 2^12966609723 is an apocalyptic number.

12966609723 is a deficient number, since it is larger than the sum of its proper divisors (4879907013).

12966609723 is a wasteful number, since it uses less digits than its factorization.

12966609723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139425945.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 12966609723 in words is "twelve billion, nine hundred sixty-six million, six hundred nine thousand, seven hundred twenty-three".