7899886688 has 48 divisors (see below), whose sum is σ = 15643031040. Its totient is φ = 3927131136.

The previous prime is 7899886681. The next prime is 7899886691. The reversal of 7899886688 is 8866889987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899886681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4766756 + ... + 4768412.

It is an arithmetic number, because the mean of its divisors is an integer number (325896480).

Almost surely, 2^7899886688 is an apocalyptic number.

It is an amenable number.

7899886688 is a deficient number, since it is larger than the sum of its proper divisors (7743144352).

7899886688 is a wasteful number, since it uses less digits than its factorization.

7899886688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439 (or 2431 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 77.

The square root of 7899886688 is about 88881.3067410690. The cubic root of 7899886688 is about 1991.6221790599.

The spelling of 7899886688 in words is "seven billion, eight hundred ninety-nine million, eight hundred eighty-six thousand, six hundred eighty-eight".