12513263746 has 8 divisors (see below), whose sum is σ = 19874007180. Its totient is φ = 5888594688.

The previous prime is 12513263723. The next prime is 12513263761. The reversal of 12513263746 is 64736231521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12209145025 + 304118721 = 110495^2 + 17439^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12513263699 and 12513263708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184018551 + ... + 184018618.

Almost surely, 2^12513263746 is an apocalyptic number.

12513263746 is a deficient number, since it is larger than the sum of its proper divisors (7360743434).

12513263746 is a wasteful number, since it uses less digits than its factorization.

12513263746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368037188.

The product of its digits is 181440, while the sum is 40.

The spelling of 12513263746 in words is "twelve billion, five hundred thirteen million, two hundred sixty-three thousand, seven hundred forty-six".