18552987000000 has 588 divisors, whose sum is σ = 69971837942760. Its totient is φ = 4687027200000.

The previous prime is 18552986999971. The next prime is 18552987000001. The reversal of 18552987000000 is 78925581.

It is a happy number.

18552987000000 is a `hidden beast` number, since 1 + 8 + 552 + 98 + 7 + 0 + 0 + 0 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18552987000000.

It is not an unprimeable number, because it can be changed into a prime (18552987000001) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 170945752 + ... + 171054248.

Almost surely, 2^{18552987000000} is an apocalyptic number.

18552987000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18552987000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34985918971380).

18552987000000 is an abundant number, since it is smaller than the sum of its proper divisors (51418850942760).

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

18552987000000 is an equidigital number, since it uses as much as digits as its factorization.

18552987000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108564 (or 108526 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 18552987000000 in words is "eighteen trillion, five hundred fifty-two billion, nine hundred eighty-seven million", and thus it is an aban number.