12715268644 has 27 divisors (see below), whose sum is σ = 24100614867. Its totient is φ = 5867232384.

The previous prime is 12715268639. The next prime is 12715268651. The reversal of 12715268644 is 44686251721.

The square root of 12715268644 is 112762.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9768950244 + 2946318400 = 98838^2 + 54280^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12715268594 and 12715268603.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2929644 + ... + 2933980.

Almost surely, 2^12715268644 is an apocalyptic number.

12715268644 is the 112762-nd square number.

It is an amenable number.

12715268644 is a deficient number, since it is larger than the sum of its proper divisors (11385346223).

12715268644 is an frugal number, since it uses more digits than its factorization.

12715268644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704 (or 4352 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The spelling of 12715268644 in words is "twelve billion, seven hundred fifteen million, two hundred sixty-eight thousand, six hundred forty-four".