2261889024569 has 4 divisors (see below), whose sum is σ = 2339885197860. Its totient is φ = 2183892851280.

The previous prime is 2261889024557. The next prime is 2261889024599. The reversal of 2261889024569 is 9654209881622.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1123837452544 + 1138051572025 = 1060112^2 + 1066795^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261889024569 - 2²⁸ = 2261620589113 is a prime.

It is a super-2 number, since 2×2261889024569² (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 (2261889024509) 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, 38998086602 + ... + 38998086659.

It is an arithmetic number, because the mean of its divisors is an integer number (584971299465).

Almost surely, 2^{2261889024569} is an apocalyptic number.

2261889024569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2261889024569 is a deficient number, since it is larger than the sum of its proper divisors (77996173291).

2261889024569 is an equidigital number, since it uses as much as digits as its factorization.

2261889024569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77996173290.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 2261889024569 in words is "two trillion, two hundred sixty-one billion, eight hundred eighty-nine million, twenty-four thousand, five hundred sixty-nine".