12641002236 has 30 divisors (see below), whose sum is σ = 33046077680. Its totient is φ = 4213667304.

The previous prime is 12641002223. The next prime is 12641002247. The reversal of 12641002236 is 63220014621.

12641002236 is a `hidden beast` number, since 1 + 26 + 410 + 0 + 223 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19507396 + ... + 19508043.

Almost surely, 2^12641002236 is an apocalyptic number.

It is an amenable number.

12641002236 is an abundant number, since it is smaller than the sum of its proper divisors (20405075444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12641002236 is a wasteful number, since it uses less digits than its factorization.

12641002236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39015455 (or 39015444 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 12641002236 its reverse (63220014621), we get a palindrome (75861016857).

The spelling of 12641002236 in words is "twelve billion, six hundred forty-one million, two thousand, two hundred thirty-six".