2640443504 has 20 divisors (see below), whose sum is σ = 5292269160. Its totient is φ = 1274696640.

The previous prime is 2640443497. The next prime is 2640443521. The reversal of 2640443504 is 4053440462.

2640443504 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 3 ways as a sum of consecutive naturals, for example, 2844842 + ... + 2845769.

It is an arithmetic number, because the mean of its divisors is an integer number (264613458).

Almost surely, 2^2640443504 is an apocalyptic number.

It is an amenable number.

2640443504 is an abundant number, since it is smaller than the sum of its proper divisors (2651825656).

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

2640443504 is a wasteful number, since it uses less digits than its factorization.

2640443504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690648 (or 5690642 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 2640443504 is about 51385.2459758635. The cubic root of 2640443504 is about 1382.1620356168.

Adding to 2640443504 its reverse (4053440462), we get a palindrome (6693883966).

The spelling of 2640443504 in words is "two billion, six hundred forty million, four hundred forty-three thousand, five hundred four".