22724561871 has 24 divisors (see below), whose sum is σ = 36136935120. Its totient is φ = 13646102400.

The previous prime is 22724561843. The next prime is 22724561879. The reversal of 22724561871 is 17816542722.

22724561871 is a `hidden beast` number, since 2 + 2 + 7 + 2 + 4 + 561 + 87 + 1 = 666.

It is not a de Polignac number, because 22724561871 - 2⁶ = 22724561807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724561879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1042150 + ... + 1063731.

It is an arithmetic number, because the mean of its divisors is an integer number (1505705630).

Almost surely, 2^22724561871 is an apocalyptic number.

22724561871 is a deficient number, since it is larger than the sum of its proper divisors (13412373249).

22724561871 is a wasteful number, since it uses less digits than its factorization.

22724561871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106007 (or 2106004 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 22724561871 in words is "twenty-two billion, seven hundred twenty-four million, five hundred sixty-one thousand, eight hundred seventy-one".