2564317992 has 16 divisors (see below), whose sum is σ = 6410795040. Its totient is φ = 854772656.

The previous prime is 2564317991. The next prime is 2564317999. The reversal of 2564317992 is 2997134652.

It is not an unprimeable number, because it can be changed into a prime (2564317991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53423268 + ... + 53423315.

It is an arithmetic number, because the mean of its divisors is an integer number (400674690).

Almost surely, 2^2564317992 is an apocalyptic number.

It is an amenable number.

2564317992 is an abundant number, since it is smaller than the sum of its proper divisors (3846477048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2564317992 is a wasteful number, since it uses less digits than its factorization.

2564317992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106846592 (or 106846588 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 2564317992 is about 50639.0954895523. The cubic root of 2564317992 is about 1368.7494568168.

The spelling of 2564317992 in words is "two billion, five hundred sixty-four million, three hundred seventeen thousand, nine hundred ninety-two".