2640755089 has 6 divisors (see below), whose sum is σ = 3071898834. Its totient is φ = 2263504320.

The previous prime is 2640755081. The next prime is 2640755111. The reversal of 2640755089 is 9805570462.

It can be written as a sum of positive squares in only one way, i.e., 1630786689 + 1009968400 = 40383^2 + 31780^2 .

It is not a de Polignac number, because 2640755089 - 2³ = 2640755081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640755081) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26946432 + ... + 26946529.

It is an arithmetic number, because the mean of its divisors is an integer number (511983139).

Almost surely, 2^2640755089 is an apocalyptic number.

It is an amenable number.

2640755089 is a deficient number, since it is larger than the sum of its proper divisors (431143745).

2640755089 is an equidigital number, since it uses as much as digits as its factorization.

2640755089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53892975 (or 53892968 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 2640755089 is about 51388.2777391887. The cubic root of 2640755089 is about 1382.2164007286.

The spelling of 2640755089 in words is "two billion, six hundred forty million, seven hundred fifty-five thousand, eighty-nine".