12660715516 has 12 divisors (see below), whose sum is σ = 23119567632. Its totient is φ = 6055124768.

The previous prime is 12660715433. The next prime is 12660715517. The reversal of 12660715516 is 61551706621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660715517) 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, 68808145 + ... + 68808328.

It is an arithmetic number, because the mean of its divisors is an integer number (1926630636).

Almost surely, 2^12660715516 is an apocalyptic number.

It is an amenable number.

12660715516 is a deficient number, since it is larger than the sum of its proper divisors (10458852116).

12660715516 is a wasteful number, since it uses less digits than its factorization.

12660715516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137616500 (or 137616498 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 12660715516 in words is "twelve billion, six hundred sixty million, seven hundred fifteen thousand, five hundred sixteen".