7897977712 has 20 divisors (see below), whose sum is σ = 15303781656. Its totient is φ = 3948614720.

The previous prime is 7897977707. The next prime is 7897977721. The reversal of 7897977712 is 2177797987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242118 + ... + 272794.

Almost surely, 2^7897977712 is an apocalyptic number.

It is an amenable number.

7897977712 is a deficient number, since it is larger than the sum of its proper divisors (7405803944).

7897977712 is a wasteful number, since it uses less digits than its factorization.

7897977712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46776 (or 46770 counting only the distinct ones).

The product of its digits is 21781872, while the sum is 64.

The square root of 7897977712 is about 88870.5671862175. The cubic root of 7897977712 is about 1991.4617436269.

The spelling of 7897977712 in words is "seven billion, eight hundred ninety-seven million, nine hundred seventy-seven thousand, seven hundred twelve".