2564940799 has 4 divisors (see below), whose sum is σ = 2565078736. Its totient is φ = 2564802864.

The previous prime is 2564940797. The next prime is 2564940839. The reversal of 2564940799 is 9970494652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2564940799 - 2¹ = 2564940797 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 (2564940797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35739 + ... + 80044.

It is an arithmetic number, because the mean of its divisors is an integer number (641269684).

Almost surely, 2^2564940799 is an apocalyptic number.

2564940799 is a deficient number, since it is larger than the sum of its proper divisors (137937).

2564940799 is a wasteful number, since it uses less digits than its factorization.

2564940799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137936.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The square root of 2564940799 is about 50645.2445842648. The cubic root of 2564940799 is about 1368.8602592135.

The spelling of 2564940799 in words is "two billion, five hundred sixty-four million, nine hundred forty thousand, seven hundred ninety-nine".