18522224444642 has 8 divisors (see below), whose sum is σ = 28534237658076. Its totient is φ = 9010811891952.

The previous prime is 18522224444621. The next prime is 18522224444761. The reversal of 18522224444642 is 24644442222581.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14140901472721 + 4381322971921 = 3760439^2 + 2093161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125150165093 + ... + 125150165240.

Almost surely, 2^{18522224444642} is an apocalyptic number.

18522224444642 is a deficient number, since it is larger than the sum of its proper divisors (10012013213434).

18522224444642 is a wasteful number, since it uses less digits than its factorization.

18522224444642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250300330372.

The product of its digits is 7864320, while the sum is 50.

The spelling of 18522224444642 in words is "eighteen trillion, five hundred twenty-two billion, two hundred twenty-four million, four hundred forty-four thousand, six hundred forty-two".