12043631636 has 12 divisors (see below), whose sum is σ = 21115317300. Its totient is φ = 6010683840.

The previous prime is 12043631573. The next prime is 12043631659. The reversal of 12043631636 is 63613634021.

It can be written as a sum of positive squares in 2 ways, for example, as 9407836036 + 2635795600 = 96994^2 + 51340^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12043631596 and 12043631605.

It is a congruent number.

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, 2780561 + ... + 2784888.

It is an arithmetic number, because the mean of its divisors is an integer number (1759609775).

Almost surely, 2^12043631636 is an apocalyptic number.

It is an amenable number.

12043631636 is a deficient number, since it is larger than the sum of its proper divisors (9071685664).

12043631636 is a wasteful number, since it uses less digits than its factorization.

12043631636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565994 (or 5565992 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 12043631636 in words is "twelve billion, forty-three million, six hundred thirty-one thousand, six hundred thirty-six".