8117536664 has 8 divisors (see below), whose sum is σ = 15220381260. Its totient is φ = 4058768328.

The previous prime is 8117536663. The next prime is 8117536673. The reversal of 8117536664 is 4666357118.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117536663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507346034 + ... + 507346049.

Almost surely, 2^8117536664 is an apocalyptic number.

It is an amenable number.

8117536664 is a deficient number, since it is larger than the sum of its proper divisors (7102844596).

8117536664 is a wasteful number, since it uses less digits than its factorization.

8117536664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014692089 (or 1014692085 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 8117536664 is about 90097.3732358497. The cubic root of 8117536664 is about 2009.7471414464.

The spelling of 8117536664 in words is "eight billion, one hundred seventeen million, five hundred thirty-six thousand, six hundred sixty-four".