12612637636 has 27 divisors (see below), whose sum is σ = 22259614503. Its totient is φ = 6253198080.

The previous prime is 12612637619. The next prime is 12612637691. The reversal of 12612637636 is 63673621621.

The square root of 12612637636 is 112306.

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 36360900 + 12576276736 = 6030^2 + 112144^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12612637592 and 12612637601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52334476 + ... + 52334716.

Almost surely, 2^12612637636 is an apocalyptic number.

12612637636 is the 112306-th square number.

It is an amenable number.

12612637636 is a deficient number, since it is larger than the sum of its proper divisors (9646976867).

12612637636 is an frugal number, since it uses more digits than its factorization.

12612637636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 476 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The spelling of 12612637636 in words is "twelve billion, six hundred twelve million, six hundred thirty-seven thousand, six hundred thirty-six".