8561490264 has 32 divisors (see below), whose sum is σ = 23781918000. Its totient is φ = 2853830016.

The previous prime is 8561490253. The next prime is 8561490271. The reversal of 8561490264 is 4620941658.

8561490264 is a `hidden beast` number, since 8 + 5 + 614 + 9 + 0 + 26 + 4 = 666.

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, 19818049 + ... + 19818480.

Almost surely, 2^8561490264 is an apocalyptic number.

It is an amenable number.

8561490264 is an abundant number, since it is smaller than the sum of its proper divisors (15220427736).

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

8561490264 is a wasteful number, since it uses less digits than its factorization.

8561490264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39636544 (or 39636534 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 8561490264 is about 92528.3214156617. The cubic root of 8561490264 is about 2045.7369481473.

The spelling of 8561490264 in words is "eight billion, five hundred sixty-one million, four hundred ninety thousand, two hundred sixty-four".