2544660544 has 56 divisors (see below), whose sum is σ = 5223507968. Its totient is φ = 1228677120.

The previous prime is 2544660541. The next prime is 2544660551. The reversal of 2544660544 is 4450664452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2544660497 and 2544660506.

It is not an unprimeable number, because it can be changed into a prime (2544660541) 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 7 ways as a sum of consecutive naturals, for example, 1203232 + ... + 1205344.

It is an arithmetic number, because the mean of its divisors is an integer number (93276928).

Almost surely, 2^2544660544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2544660544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611753984).

2544660544 is an abundant number, since it is smaller than the sum of its proper divisors (2678847424).

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

2544660544 is a wasteful number, since it uses less digits than its factorization.

2544660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2753 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The square root of 2544660544 is about 50444.6284950142. The cubic root of 2544660544 is about 1365.2429796402.

The spelling of 2544660544 in words is "two billion, five hundred forty-four million, six hundred sixty thousand, five hundred forty-four".