8243152644 has 24 divisors (see below), whose sum is σ = 20365436448. Its totient is φ = 2586087040.

The previous prime is 8243152583. The next prime is 8243152693. The reversal of 8243152644 is 4462513428.

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, 20203602 + ... + 20204009.

It is an arithmetic number, because the mean of its divisors is an integer number (848559852).

Almost surely, 2^8243152644 is an apocalyptic number.

It is an amenable number.

8243152644 is an abundant number, since it is smaller than the sum of its proper divisors (12122283804).

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

8243152644 is a wasteful number, since it uses less digits than its factorization.

8243152644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407635 (or 40407633 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 8243152644 is about 90791.8093442355. The cubic root of 8243152644 is about 2020.0608291325.

The spelling of 8243152644 in words is "eight billion, two hundred forty-three million, one hundred fifty-two thousand, six hundred forty-four".