2640052645 has 8 divisors (see below), whose sum is σ = 3221759520. Its totient is φ = 2076244560.

The previous prime is 2640052567. The next prime is 2640052661. The reversal of 2640052645 is 5462500462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2640052645 - 2¹¹ = 2640050597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2640052645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4474371 + ... + 4474960.

It is an arithmetic number, because the mean of its divisors is an integer number (402719940).

Almost surely, 2^2640052645 is an apocalyptic number.

It is an amenable number.

2640052645 is a deficient number, since it is larger than the sum of its proper divisors (581706875).

2640052645 is an equidigital number, since it uses as much as digits as its factorization.

2640052645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8949395.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2640052645 is about 51381.4426130680. The cubic root of 2640052645 is about 1382.0938327904.

The spelling of 2640052645 in words is "two billion, six hundred forty million, fifty-two thousand, six hundred forty-five".