77983611638977 has 32 divisors (see below), whose sum is σ = 90130745585664. Its totient is φ = 66684386592000.

The previous prime is 77983611638927. The next prime is 77983611638983.

77983611638977 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77983611638977 - 2³⁵ = 77949251900609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77983611638977.

It is not an unprimeable number, because it can be changed into a prime (77983611638927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3632709798 + ... + 3632731264.

It is an arithmetic number, because the mean of its divisors is an integer number (2816585799552).

Almost surely, 2^{77983611638977} is an apocalyptic number.

It is an amenable number.

77983611638977 is a deficient number, since it is larger than the sum of its proper divisors (12147133946687).

77983611638977 is a wasteful number, since it uses less digits than its factorization.

77983611638977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32109.

The product of its digits is 4032758016, while the sum is 82.

The spelling of 77983611638977 in words is "seventy-seven trillion, nine hundred eighty-three billion, six hundred eleven million, six hundred thirty-eight thousand, nine hundred seventy-seven".