2595640440 has 32 divisors (see below), whose sum is σ = 7786921680. Its totient is φ = 692170752.

The previous prime is 2595640403. The next prime is 2595640441. The reversal of 2595640440 is 440465952.

It is a happy number.

2595640440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2595640441) 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, 10815049 + ... + 10815288.

Almost surely, 2^2595640440 is an apocalyptic number.

2595640440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2595640440 is an abundant number, since it is smaller than the sum of its proper divisors (5191281240).

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

2595640440 is a wasteful number, since it uses less digits than its factorization.

2595640440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21630351 (or 21630347 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 2595640440 is about 50947.4281980946. The cubic root of 2595640440 is about 1374.2998864463.

The spelling of 2595640440 in words is "two billion, five hundred ninety-five million, six hundred forty thousand, four hundred forty".