12365631441 has 12 divisors (see below), whose sum is σ = 17879951232. Its totient is φ = 8235223416.

The previous prime is 12365631437. The next prime is 12365631451. The reversal of 12365631441 is 14413656321.

12365631441 is a `hidden beast` number, since 12 + 3 + 6 + 5 + 631 + 4 + 4 + 1 = 666.

It is not a de Polignac number, because 12365631441 - 2² = 12365631437 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12365631396 and 12365631405.

It is not an unprimeable number, because it can be changed into a prime (12365631401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 701721 + ... + 719126.

It is an arithmetic number, because the mean of its divisors is an integer number (1489995936).

Almost surely, 2^12365631441 is an apocalyptic number.

It is an amenable number.

12365631441 is a deficient number, since it is larger than the sum of its proper divisors (5514319791).

12365631441 is a wasteful number, since it uses less digits than its factorization.

12365631441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421820 (or 1421817 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 12365631441 in words is "twelve billion, three hundred sixty-five million, six hundred thirty-one thousand, four hundred forty-one".