18522053522020 has 24 divisors (see below), whose sum is σ = 39063249369144. Its totient is φ = 7377023890176.

The previous prime is 18522053521991. The next prime is 18522053522029. The reversal of 18522053522020 is 2022535022581.

It can be written as a sum of positive squares in 4 ways, for example, as 588878203456 + 17933175318564 = 767384^2 + 4234758^2 .

It is not an unprimeable number, because it can be changed into a prime (18522053522029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987340139 + ... + 1987349458.

It is an arithmetic number, because the mean of its divisors is an integer number (1627635390381).

Almost surely, 2^{18522053522020} is an apocalyptic number.

18522053522020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18522053522020 is an abundant number, since it is smaller than the sum of its proper divisors (20541195847124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18522053522020 is a wasteful number, since it uses less digits than its factorization.

18522053522020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974689839 (or 3974689837 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 18522053522020 in words is "eighteen trillion, five hundred twenty-two billion, fifty-three million, five hundred twenty-two thousand, twenty".