2640752544 has 144 divisors (see below), whose sum is σ = 7636410432. Its totient is φ = 797423616.

The previous prime is 2640752501. The next prime is 2640752551. The reversal of 2640752544 is 4452570462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 795432 + ... + 798744.

It is an arithmetic number, because the mean of its divisors is an integer number (53030628).

Almost surely, 2^2640752544 is an apocalyptic number.

2640752544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640752544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3818205216).

2640752544 is an abundant number, since it is smaller than the sum of its proper divisors (4995657888).

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

2640752544 is a wasteful number, since it uses less digits than its factorization.

2640752544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 39.

The square root of 2640752544 is about 51388.2529767261. The cubic root of 2640752544 is about 1382.2159566963.

The spelling of 2640752544 in words is "two billion, six hundred forty million, seven hundred fifty-two thousand, five hundred forty-four".