22657431890 has 16 divisors (see below), whose sum is σ = 41778094680. Its totient is φ = 8841924480.

The previous prime is 22657431877. The next prime is 22657431941. The reversal of 22657431890 is 9813475622.

It can be written as a sum of positive squares in 4 ways, for example, as 6462069769 + 16195362121 = 80387^2 + 127261^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27630605 + ... + 27631424.

It is a 1-persistent number, because it is pandigital, but 2⋅22657431890 = 45314863780 is not.

Almost surely, 2^22657431890 is an apocalyptic number.

22657431890 is a deficient number, since it is larger than the sum of its proper divisors (19120662790).

22657431890 is a wasteful number, since it uses less digits than its factorization.

22657431890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55262077.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 22657431890 in words is "twenty-two billion, six hundred fifty-seven million, four hundred thirty-one thousand, eight hundred ninety".