77933833977 has 4 divisors (see below), whose sum is σ = 103911778640. Its totient is φ = 51955889316.

The previous prime is 77933833973. The next prime is 77933833981.

77933833977 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (77933833973) and next prime (77933833981).

It is not a de Polignac number, because 77933833977 - 2² = 77933833973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77933833973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12988972327 + ... + 12988972332.

It is an arithmetic number, because the mean of its divisors is an integer number (25977944660).

Almost surely, 2^77933833977 is an apocalyptic number.

It is an amenable number.

77933833977 is a deficient number, since it is larger than the sum of its proper divisors (25977944663).

77933833977 is a wasteful number, since it uses less digits than its factorization.

77933833977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25977944662.

The product of its digits is 126023688, while the sum is 66.

The spelling of 77933833977 in words is "seventy-seven billion, nine hundred thirty-three million, eight hundred thirty-three thousand, nine hundred seventy-seven".