18621188822000 has 80 divisors (see below), whose sum is σ = 45122452326432. Its totient is φ = 7432525529600.

The previous prime is 18621188821987. The next prime is 18621188822021. The reversal of 18621188822000 is 22888112681.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9034517 + ... + 10902516.

Almost surely, 2^{18621188822000} is an apocalyptic number.

18621188822000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18621188822000 is an abundant number, since it is smaller than the sum of its proper divisors (26501263504432).

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

18621188822000 is a wasteful number, since it uses less digits than its factorization.

18621188822000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19937523 (or 19937507 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 47.

The spelling of 18621188822000 in words is "eighteen trillion, six hundred twenty-one billion, one hundred eighty-eight million, eight hundred twenty-two thousand".