8641536408 has 32 divisors (see below), whose sum is σ = 24004268400. Its totient is φ = 2880512064.

The previous prime is 8641536367. The next prime is 8641536427. The reversal of 8641536408 is 8046351468.

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, 20003341 + ... + 20003772.

Almost surely, 2^8641536408 is an apocalyptic number.

It is an amenable number.

8641536408 is an abundant number, since it is smaller than the sum of its proper divisors (15362731992).

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

8641536408 is a wasteful number, since it uses less digits than its factorization.

8641536408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007128 (or 40007118 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 8641536408 is about 92959.8645007618. The cubic root of 8641536408 is about 2052.0927593922.

The spelling of 8641536408 in words is "eight billion, six hundred forty-one million, five hundred thirty-six thousand, four hundred eight".