2261157227244 has 60 divisors (see below), whose sum is σ = 5999337244824. Its totient is φ = 742469530176.

The previous prime is 2261157227243. The next prime is 2261157227321. The reversal of 2261157227244 is 4427227511622.

2261157227244 is a `hidden beast` number, since 2 + 2 + 6 + 1 + 1 + 572 + 2 + 72 + 4 + 4 = 666.

It is a super-2 number, since 2×2261157227244² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2261157227244.

It is not an unprimeable number, because it can be changed into a prime (2261157227243) 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 19 ways as a sum of consecutive naturals, for example, 52059489 + ... + 52102904.

Almost surely, 2^{2261157227244} is an apocalyptic number.

It is an amenable number.

2261157227244 is an abundant number, since it is smaller than the sum of its proper divisors (3738180017580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2261157227244 is a wasteful number, since it uses less digits than its factorization.

2261157227244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104162476 (or 104162465 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 2261157227244 in words is "two trillion, two hundred sixty-one billion, one hundred fifty-seven million, two hundred twenty-seven thousand, two hundred forty-four".