77937799773977 has 16 divisors (see below), whose sum is σ = 91893842682432. Its totient is φ = 65166239862720.

The previous prime is 77937799773959. The next prime is 77937799773989.

77937799773977 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 77937799773977 - 2²⁸ = 77937531338521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77937799773917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983750243 + ... + 983829464.

It is an arithmetic number, because the mean of its divisors is an integer number (5743365167652).

Almost surely, 2^{77937799773977} is an apocalyptic number.

It is an amenable number.

77937799773977 is a deficient number, since it is larger than the sum of its proper divisors (13956042908455).

77937799773977 is a wasteful number, since it uses less digits than its factorization.

77937799773977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967580008.

The product of its digits is 340405734249, while the sum is 98.

The spelling of 77937799773977 in words is "seventy-seven trillion, nine hundred thirty-seven billion, seven hundred ninety-nine million, seven hundred seventy-three thousand, nine hundred seventy-seven".