2564464020 has 24 divisors (see below), whose sum is σ = 7180499424. Its totient is φ = 683857056.

The previous prime is 2564464013. The next prime is 2564464039. The reversal of 2564464020 is 204644652.

2564464020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21370474 + ... + 21370593.

It is an arithmetic number, because the mean of its divisors is an integer number (299187476).

Almost surely, 2^2564464020 is an apocalyptic number.

2564464020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2564464020 is an abundant number, since it is smaller than the sum of its proper divisors (4616035404).

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

2564464020 is a wasteful number, since it uses less digits than its factorization.

2564464020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42741079 (or 42741077 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 2564464020 is about 50640.5373194242. The cubic root of 2564464020 is about 1368.7754379877.

The spelling of 2564464020 in words is "two billion, five hundred sixty-four million, four hundred sixty-four thousand, twenty".