18500422566012 has 24 divisors (see below), whose sum is σ = 43172401302912. Its totient is φ = 6166129143600.

The previous prime is 18500422566007. The next prime is 18500422566113. The reversal of 18500422566012 is 21066522400581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84683664 + ... + 84901847.

It is an arithmetic number, because the mean of its divisors is an integer number (1798850054288).

Almost surely, 2^{18500422566012} is an apocalyptic number.

18500422566012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18500422566012 is an abundant number, since it is smaller than the sum of its proper divisors (24671978736900).

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

18500422566012 is a wasteful number, since it uses less digits than its factorization.

18500422566012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169594609 (or 169594607 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

Adding to 18500422566012 its reverse (21066522400581), we get a palindrome (39566944966593).

The spelling of 18500422566012 in words is "eighteen trillion, five hundred billion, four hundred twenty-two million, five hundred sixty-six thousand, twelve".