2265568781 has 8 divisors (see below), whose sum is σ = 2618314560. Its totient is φ = 1920096288.

The previous prime is 2265568771. The next prime is 2265568783. The reversal of 2265568781 is 1878655622.

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 2265568781 - 2²² = 2261374477 is a prime.

It is a super-2 number, since 2×2265568781² = 10265603802883651922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265568783) 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, 1817651 + ... + 1818896.

It is an arithmetic number, because the mean of its divisors is an integer number (327289320).

Almost surely, 2^2265568781 is an apocalyptic number.

It is an amenable number.

2265568781 is a deficient number, since it is larger than the sum of its proper divisors (352745779).

2265568781 is an equidigital number, since it uses as much as digits as its factorization.

2265568781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636643.

The product of its digits is 1612800, while the sum is 50.

The square root of 2265568781 is about 47597.9913546780. The cubic root of 2265568781 is about 1313.3861045315.

The spelling of 2265568781 in words is "two billion, two hundred sixty-five million, five hundred sixty-eight thousand, seven hundred eighty-one".