8243652566 has 16 divisors (see below), whose sum is σ = 12415329024. Its totient is φ = 4105243944.

The previous prime is 8243652553. The next prime is 8243652581. The reversal of 8243652566 is 6652563428.

It is a self number, because there is not a number n which added to its sum of digits gives 8243652566.

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, 501311 + ... + 517493.

It is an arithmetic number, because the mean of its divisors is an integer number (775958064).

Almost surely, 2^8243652566 is an apocalyptic number.

8243652566 is a deficient number, since it is larger than the sum of its proper divisors (4171676458).

8243652566 is a wasteful number, since it uses less digits than its factorization.

8243652566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17195.

The product of its digits is 2073600, while the sum is 47.

The square root of 8243652566 is about 90794.5624252906. The cubic root of 8243652566 is about 2020.1016651443.

The spelling of 8243652566 in words is "eight billion, two hundred forty-three million, six hundred fifty-two thousand, five hundred sixty-six".