2566765363 has 8 divisors (see below), whose sum is σ = 2622973248. Its totient is φ = 2510624064.

The previous prime is 2566765361. The next prime is 2566765387. The reversal of 2566765363 is 3635676652.

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 2566765363 - 2¹ = 2566765361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566765361) 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, 65695 + ... + 97207.

It is an arithmetic number, because the mean of its divisors is an integer number (327871656).

Almost surely, 2^2566765363 is an apocalyptic number.

2566765363 is a deficient number, since it is larger than the sum of its proper divisors (56207885).

2566765363 is a wasteful number, since it uses less digits than its factorization.

2566765363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33293.

The product of its digits is 4082400, while the sum is 49.

The square root of 2566765363 is about 50663.2545638355. The cubic root of 2566765363 is about 1369.1847606823.

The spelling of 2566765363 in words is "two billion, five hundred sixty-six million, seven hundred sixty-five thousand, three hundred sixty-three".