2544415664 has 40 divisors (see below), whose sum is σ = 5879028480. Its totient is φ = 1043051328.

The previous prime is 2544415661. The next prime is 2544415669. The reversal of 2544415664 is 4665144452.

2544415664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2544415661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491294 + ... + 496445.

It is an arithmetic number, because the mean of its divisors is an integer number (146975712).

Almost surely, 2^2544415664 is an apocalyptic number.

It is an amenable number.

2544415664 is an abundant number, since it is smaller than the sum of its proper divisors (3334612816).

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

2544415664 is a wasteful number, since it uses less digits than its factorization.

2544415664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987777 (or 987771 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The square root of 2544415664 is about 50442.2012208032. The cubic root of 2544415664 is about 1365.1991844830.

The spelling of 2544415664 in words is "two billion, five hundred forty-four million, four hundred fifteen thousand, six hundred sixty-four".