12713665312 has 24 divisors (see below), whose sum is σ = 25706518236. Its totient is φ = 6185025792.

The previous prime is 12713665273. The next prime is 12713665313. The reversal of 12713665312 is 21356631721.

It can be written as a sum of positive squares in 2 ways, for example, as 12623870736 + 89794576 = 112356^2 + 9476^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (12713665313) 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, 5367763 + ... + 5370130.

Almost surely, 2^12713665312 is an apocalyptic number.

It is an amenable number.

12713665312 is an abundant number, since it is smaller than the sum of its proper divisors (12992852924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12713665312 is a wasteful number, since it uses less digits than its factorization.

12713665312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737940 (or 10737932 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The spelling of 12713665312 in words is "twelve billion, seven hundred thirteen million, six hundred sixty-five thousand, three hundred twelve".