2645351565 has 16 divisors (see below), whose sum is σ = 4233817728. Its totient is φ = 1410435776.

The previous prime is 2645351563. The next prime is 2645351633. The reversal of 2645351565 is 5651535462.

It is a cyclic number.

It is not a de Polignac number, because 2645351565 - 2¹ = 2645351563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645351563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30007 + ... + 78683.

It is an arithmetic number, because the mean of its divisors is an integer number (264613608).

Almost surely, 2^2645351565 is an apocalyptic number.

It is an amenable number.

2645351565 is a deficient number, since it is larger than the sum of its proper divisors (1588466163).

2645351565 is a wasteful number, since it uses less digits than its factorization.

2645351565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52308.

The product of its digits is 540000, while the sum is 42.

The square root of 2645351565 is about 51432.9812960517. The cubic root of 2645351565 is about 1383.0178939478.

The spelling of 2645351565 in words is "two billion, six hundred forty-five million, three hundred fifty-one thousand, five hundred sixty-five".