8561938833 has 48 divisors (see below), whose sum is σ = 14395495296. Its totient is φ = 4802353920.

The previous prime is 8561938831. The next prime is 8561938843. The reversal of 8561938833 is 3388391658.

It is a happy number.

It is not a de Polignac number, because 8561938833 - 2¹ = 8561938831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8561938833.

It is not an unprimeable number, because it can be changed into a prime (8561938831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2100085 + ... + 2104157.

It is an arithmetic number, because the mean of its divisors is an integer number (299906152).

Almost surely, 2^8561938833 is an apocalyptic number.

It is an amenable number.

8561938833 is a deficient number, since it is larger than the sum of its proper divisors (5833556463).

8561938833 is a wasteful number, since it uses less digits than its factorization.

8561938833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694 (or 4691 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 8561938833 is about 92530.7453390493. The cubic root of 8561938833 is about 2045.7726755001.

The spelling of 8561938833 in words is "eight billion, five hundred sixty-one million, nine hundred thirty-eight thousand, eight hundred thirty-three".