8651338556 has 24 divisors (see below), whose sum is σ = 18320482656. Its totient is φ = 3489615360.

The previous prime is 8651338543. The next prime is 8651338561. The reversal of 8651338556 is 6558331568.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9087065 + ... + 9088016.

It is an arithmetic number, because the mean of its divisors is an integer number (763353444).

Almost surely, 2^8651338556 is an apocalyptic number.

It is an amenable number.

8651338556 is an abundant number, since it is smaller than the sum of its proper divisors (9669144100).

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

8651338556 is a wasteful number, since it uses less digits than its factorization.

8651338556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18175109 (or 18175107 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 50.

The square root of 8651338556 is about 93012.5720319571. The cubic root of 8651338556 is about 2052.8683666949.

The spelling of 8651338556 in words is "eight billion, six hundred fifty-one million, three hundred thirty-eight thousand, five hundred fifty-six".