977531767135779 has 16 divisors (see below), whose sum is σ = 1316281919101344. Its totient is φ = 645234744864000.

The previous prime is 977531767135691. The next prime is 977531767135789.

977531767135779 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 977531767135779 - 2¹² = 977531767131683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (977531767135789) 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, 413890327 + ... + 416245439.

It is an arithmetic number, because the mean of its divisors is an integer number (82267619943834).

Almost surely, 2^{977531767135779} is an apocalyptic number.

977531767135779 is a deficient number, since it is larger than the sum of its proper divisors (338750151965565).

977531767135779 is a wasteful number, since it uses less digits than its factorization.

977531767135779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725078.

The product of its digits is 12864918150, while the sum is 84.

The spelling of 977531767135779 in words is "nine hundred seventy-seven trillion, five hundred thirty-one billion, seven hundred sixty-seven million, one hundred thirty-five thousand, seven hundred seventy-nine".