2564326516 has 12 divisors (see below), whose sum is σ = 4494244132. Its totient is φ = 1280256768.

The previous prime is 2564326489. The next prime is 2564326547. The reversal of 2564326516 is 6156234652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 699814116 + 1864512400 = 26454^2 + 43180^2 .

It is a congruent number.

It is an unprimeable number.

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, 473595 + ... + 478978.

Almost surely, 2^2564326516 is an apocalyptic number.

It is an amenable number.

2564326516 is a deficient number, since it is larger than the sum of its proper divisors (1929917616).

2564326516 is a wasteful number, since it uses less digits than its factorization.

2564326516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953250 (or 953248 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 2564326516 is about 50639.1796537029. The cubic root of 2564326516 is about 1368.7509734263.

The spelling of 2564326516 in words is "two billion, five hundred sixty-four million, three hundred twenty-six thousand, five hundred sixteen".