2640565045 has 8 divisors (see below), whose sum is σ = 3236097024. Its totient is φ = 2067506064.

The previous prime is 2640565013. The next prime is 2640565087. The reversal of 2640565045 is 5405650462.

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

It is a cyclic number.

It is not a de Polignac number, because 2640565045 - 2⁵ = 2640565013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640564995 and 2640565013.

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, 5617989 + ... + 5618458.

It is an arithmetic number, because the mean of its divisors is an integer number (404512128).

Almost surely, 2^2640565045 is an apocalyptic number.

It is an amenable number.

2640565045 is a deficient number, since it is larger than the sum of its proper divisors (595531979).

2640565045 is a wasteful number, since it uses less digits than its factorization.

2640565045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11236499.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2640565045 is about 51386.4286071721. The cubic root of 2640565045 is about 1382.1832425060.

The spelling of 2640565045 in words is "two billion, six hundred forty million, five hundred sixty-five thousand, forty-five".