9775766563 has 16 divisors (see below), whose sum is σ = 9985876992. Its totient is φ = 9567964000.

The previous prime is 9775766549. The next prime is 9775766593. The reversal of 9775766563 is 3656675779.

9775766563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9775766563 - 2²⁵ = 9742212131 is a prime.

It is a super-2 number, since 2×9775766563² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9775766543) 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, 6468978 + ... + 6470488.

It is an arithmetic number, because the mean of its divisors is an integer number (624117312).

Almost surely, 2^9775766563 is an apocalyptic number.

9775766563 is a deficient number, since it is larger than the sum of its proper divisors (210110429).

9775766563 is a wasteful number, since it uses less digits than its factorization.

9775766563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186.

The product of its digits is 50009400, while the sum is 61.

The square root of 9775766563 is about 98872.4762661480. The cubic root of 9775766563 is about 2138.2095953880.

The spelling of 9775766563 in words is "nine billion, seven hundred seventy-five million, seven hundred sixty-six thousand, five hundred sixty-three".