22861389506 has 24 divisors (see below), whose sum is σ = 37316448036. Its totient is φ = 10495892480.

The previous prime is 22861389493. The next prime is 22861389517. The reversal of 22861389506 is 60598316822.

It can be written as a sum of positive squares in 6 ways, for example, as 4507913881 + 18353475625 = 67141^2 + 135475^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458651 + ... + 506046.

Almost surely, 2^22861389506 is an apocalyptic number.

22861389506 is a deficient number, since it is larger than the sum of its proper divisors (14455058530).

22861389506 is a wasteful number, since it uses less digits than its factorization.

22861389506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964774 (or 964757 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 22861389506 in words is "twenty-two billion, eight hundred sixty-one million, three hundred eighty-nine thousand, five hundred six".