2566117331 has 4 divisors (see below), whose sum is σ = 2594950200. Its totient is φ = 2537284464.

The previous prime is 2566117319. The next prime is 2566117361. The reversal of 2566117331 is 1337116652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2566117331 is a prime.

It is a super-2 number, since 2×2566117331² = 13169916312917127122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2566117291 and 2566117300.

It is not an unprimeable number, because it can be changed into a prime (2566117361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14416301 + ... + 14416478.

It is an arithmetic number, because the mean of its divisors is an integer number (648737550).

Almost surely, 2^2566117331 is an apocalyptic number.

2566117331 is a deficient number, since it is larger than the sum of its proper divisors (28832869).

2566117331 is an equidigital number, since it uses as much as digits as its factorization.

2566117331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28832868.

The product of its digits is 22680, while the sum is 35.

The square root of 2566117331 is about 50656.8586767873. The cubic root of 2566117331 is about 1369.0695248252.

The spelling of 2566117331 in words is "two billion, five hundred sixty-six million, one hundred seventeen thousand, three hundred thirty-one".