7797984977 has 8 divisors (see below), whose sum is σ = 7843818720. Its totient is φ = 7752286080.

The previous prime is 7797984973. The next prime is 7797984989. The reversal of 7797984977 is 7794897977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7797984977 - 2² = 7797984973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7797984973) 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, 83474 + ... + 150212.

It is an arithmetic number, because the mean of its divisors is an integer number (980477340).

Almost surely, 2^7797984977 is an apocalyptic number.

It is an amenable number.

7797984977 is a deficient number, since it is larger than the sum of its proper divisors (45833743).

7797984977 is a wasteful number, since it uses less digits than its factorization.

7797984977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67423.

The product of its digits is 392073696, while the sum is 74.

The square root of 7797984977 is about 88306.2001050889. The cubic root of 7797984977 is about 1983.0216911152.

The spelling of 7797984977 in words is "seven billion, seven hundred ninety-seven million, nine hundred eighty-four thousand, nine hundred seventy-seven".