2265581855771 has 16 divisors (see below), whose sum is σ = 2469571583136. Its totient is φ = 2065843512576.

The previous prime is 2265581855753. The next prime is 2265581855777. The reversal of 2265581855771 is 1775581855622.

It is a cyclic number.

It is not a de Polignac number, because 2265581855771 - 2²⁶ = 2265514746907 is a prime.

It is a super-2 number, since 2×2265581855771² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2265581855777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8493101 + ... + 8755793.

It is an arithmetic number, because the mean of its divisors is an integer number (154348223946).

Almost surely, 2^{2265581855771} is an apocalyptic number.

2265581855771 is a deficient number, since it is larger than the sum of its proper divisors (203989727365).

2265581855771 is a wasteful number, since it uses less digits than its factorization.

2265581855771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270782.

The product of its digits is 47040000, while the sum is 62.

The spelling of 2265581855771 in words is "two trillion, two hundred sixty-five billion, five hundred eighty-one million, eight hundred fifty-five thousand, seven hundred seventy-one".