12652268738 has 6 divisors (see below), whose sum is σ = 18978641721. Its totient is φ = 6326054832.

The previous prime is 12652268719. The next prime is 12652268771. The reversal of 12652268738 is 83786225621.

It can be written as a sum of positive squares in 2 ways, for example, as 8440648129 + 4211620609 = 91873^2 + 64897^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79537.

It is a super-2 number, since 2×12652268738² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 119306 + ... + 198842.

Almost surely, 2^12652268738 is an apocalyptic number.

12652268738 is a deficient number, since it is larger than the sum of its proper divisors (6326372983).

12652268738 is an frugal number, since it uses more digits than its factorization.

12652268738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159076 (or 79539 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

Multiplying 12652268738 by its sum of digits (50), we get a square (632613436900 = 795370²).

The spelling of 12652268738 in words is "twelve billion, six hundred fifty-two million, two hundred sixty-eight thousand, seven hundred thirty-eight".