9777664511 has 16 divisors (see below), whose sum is σ = 10171818720. Its totient is φ = 9390712320.

The previous prime is 9777664483. The next prime is 9777664531. The reversal of 9777664511 is 1154667779.

It is a cyclic number.

It is not a de Polignac number, because 9777664511 - 2³⁰ = 8703922687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9777664531) 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, 2273315 + ... + 2277611.

It is an arithmetic number, because the mean of its divisors is an integer number (635738670).

Almost surely, 2^9777664511 is an apocalyptic number.

9777664511 is a deficient number, since it is larger than the sum of its proper divisors (394154209).

9777664511 is a wasteful number, since it uses less digits than its factorization.

9777664511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114.

The product of its digits is 2222640, while the sum is 53.

The square root of 9777664511 is about 98882.0737596052. The cubic root of 9777664511 is about 2138.3479629863.

The spelling of 9777664511 in words is "nine billion, seven hundred seventy-seven million, six hundred sixty-four thousand, five hundred eleven".