18528640190800 has 60 divisors (see below), whose sum is σ = 44530395006240. Its totient is φ = 7408902578560.

The previous prime is 18528640190701. The next prime is 18528640190813. The reversal of 18528640190800 is 809104682581.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6817030 + ... + 9139429.

It is an arithmetic number, because the mean of its divisors is an integer number (742173250104).

Almost surely, 2^{18528640190800} is an apocalyptic number.

18528640190800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18528640190800 is an abundant number, since it is smaller than the sum of its proper divisors (26001754815440).

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

18528640190800 is a wasteful number, since it uses less digits than its factorization.

18528640190800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15959380 (or 15959369 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 18528640190800 in words is "eighteen trillion, five hundred twenty-eight billion, six hundred forty million, one hundred ninety thousand, eight hundred".