22615965842 has 18 divisors (see below), whose sum is σ = 34745274837. Its totient is φ = 11040540336.

The previous prime is 22615965821. The next prime is 22615965859. The reversal of 22615965842 is 24856951622.

It can be written as a sum of positive squares in 2 ways, for example, as 21161229961 + 1454735881 = 145469^2 + 38141^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106339.

It is a super-2 number, since 2×22615965842² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9143918 + ... + 9146390.

Almost surely, 2^22615965842 is an apocalyptic number.

22615965842 is a deficient number, since it is larger than the sum of its proper divisors (12129308995).

22615965842 is an frugal number, since it uses more digits than its factorization.

22615965842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034 (or 2518 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

Multiplying 22615965842 by its sum of digits (50), we get a square (1130798292100 = 1063390²).

The spelling of 22615965842 in words is "twenty-two billion, six hundred fifteen million, nine hundred sixty-five thousand, eight hundred forty-two".