77959495977 has 32 divisors (see below), whose sum is σ = 116121600000. Its totient is φ = 46125805440.

The previous prime is 77959495967. The next prime is 77959495997.

77959495977 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77959495977 - 2¹⁰ = 77959494953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77959495927) 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 31 ways as a sum of consecutive naturals, for example, 64024 + ... + 400022.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800000).

Almost surely, 2^77959495977 is an apocalyptic number.

It is an amenable number.

77959495977 is a deficient number, since it is larger than the sum of its proper divisors (38162104023).

77959495977 is a wasteful number, since it uses less digits than its factorization.

77959495977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336181.

The product of its digits is 1575296100, while the sum is 78.

The spelling of 77959495977 in words is "seventy-seven billion, nine hundred fifty-nine million, four hundred ninety-five thousand, nine hundred seventy-seven".