2261265599999 has 12 divisors (see below), whose sum is σ = 2691625121064. Its totient is φ = 1893152593584.

The previous prime is 2261265599921. The next prime is 2261265600007. The reversal of 2261265599999 is 9999955621622.

It is a de Polignac number, because none of the positive numbers 2^k-2261265599999 is a prime.

It is a super-2 number, since 2×2261265599999² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261265599699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536605772 + ... + 536609985.

It is an arithmetic number, because the mean of its divisors is an integer number (224302093422).

Almost surely, 2^{2261265599999} is an apocalyptic number.

2261265599999 is a deficient number, since it is larger than the sum of its proper divisors (430359521065).

2261265599999 is a wasteful number, since it uses less digits than its factorization.

2261265599999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073215814 (or 1073215807 counting only the distinct ones).

The product of its digits is 425152800, while the sum is 74.

The spelling of 2261265599999 in words is "two trillion, two hundred sixty-one billion, two hundred sixty-five million, five hundred ninety-nine thousand, nine hundred ninety-nine".