18166060800 has 324 divisors, whose sum is σ = 65546002704. Its totient is φ = 4799692800.

The previous prime is 18166060799. The next prime is 18166060841. The reversal of 18166060800 is 806066181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6507405 + ... + 6510195.

Almost surely, 2^18166060800 is an apocalyptic number.

18166060800 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 18166060800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32773001352).

18166060800 is an abundant number, since it is smaller than the sum of its proper divisors (47379941904).

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

18166060800 is a wasteful number, since it uses less digits than its factorization.

18166060800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 18166060800 in words is "eighteen billion, one hundred sixty-six million, sixty thousand, eight hundred".