22571438990 has 32 divisors (see below), whose sum is σ = 41355165600. Its totient is φ = 8867548800.

The previous prime is 22571438927. The next prime is 22571439013. The reversal of 22571438990 is 9983417522.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394736 + ... + 448284.

It is an arithmetic number, because the mean of its divisors is an integer number (1292348925).

Almost surely, 2^22571438990 is an apocalyptic number.

22571438990 is a deficient number, since it is larger than the sum of its proper divisors (18783726610).

22571438990 is a wasteful number, since it uses less digits than its factorization.

22571438990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54308.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 22571438990 in words is "twenty-two billion, five hundred seventy-one million, four hundred thirty-eight thousand, nine hundred ninety".