9641668771 has 16 divisors (see below), whose sum is σ = 11098931200. Its totient is φ = 8204470560.

The previous prime is 9641668739. The next prime is 9641668781. The reversal of 9641668771 is 1778661469.

It is a cyclic number.

It is not a de Polignac number, because 9641668771 - 2⁵ = 9641668739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9641668781) 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, 1534366 + ... + 1540636.

It is an arithmetic number, because the mean of its divisors is an integer number (693683200).

Almost surely, 2^9641668771 is an apocalyptic number.

9641668771 is a deficient number, since it is larger than the sum of its proper divisors (1457262429).

9641668771 is a wasteful number, since it uses less digits than its factorization.

9641668771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834.

The product of its digits is 3048192, while the sum is 55.

The square root of 9641668771 is about 98191.9995264380. Note that the first 3 decimals coincide. The cubic root of 9641668771 is about 2128.3876776252.

The spelling of 9641668771 in words is "nine billion, six hundred forty-one million, six hundred sixty-eight thousand, seven hundred seventy-one".