7797887977 has 8 divisors (see below), whose sum is σ = 8517605472. Its totient is φ = 7079973600.

The previous prime is 7797887957. The next prime is 7797887989.

7797887977 is nontrivially palindromic in base 10.

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 7797887977 - 2²⁷ = 7663670249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7797887927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441724 + ... + 459037.

It is an arithmetic number, because the mean of its divisors is an integer number (1064700684).

Almost surely, 2^7797887977 is an apocalyptic number.

It is an amenable number.

7797887977 is a deficient number, since it is larger than the sum of its proper divisors (719717495).

7797887977 is a wasteful number, since it uses less digits than its factorization.

7797887977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901559.

The product of its digits is 609892416, while the sum is 76.

The square root of 7797887977 is about 88305.6508780724. The cubic root of 7797887977 is about 1983.0134687388.

The spelling of 7797887977 in words is "seven billion, seven hundred ninety-seven million, eight hundred eighty-seven thousand, nine hundred seventy-seven".