2566345263 has 8 divisors (see below), whose sum is σ = 3425954688. Its totient is φ = 1708816344.

The previous prime is 2566345247. The next prime is 2566345291. The reversal of 2566345263 is 3625436652.

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

It is not a de Polignac number, because 2566345263 - 2⁴ = 2566345247 is a prime.

It is a super-2 number, since 2×2566345263² = 13172256017845078338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566345163) 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, 517245 + ... + 522182.

It is an arithmetic number, because the mean of its divisors is an integer number (428244336).

Almost surely, 2^2566345263 is an apocalyptic number.

2566345263 is a deficient number, since it is larger than the sum of its proper divisors (859609425).

2566345263 is a wasteful number, since it uses less digits than its factorization.

2566345263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040253.

The product of its digits is 777600, while the sum is 42.

The square root of 2566345263 is about 50659.1083912854. The cubic root of 2566345263 is about 1369.1100588923.

The spelling of 2566345263 in words is "two billion, five hundred sixty-six million, three hundred forty-five thousand, two hundred sixty-three".