18427228387000 has 128 divisors (see below), whose sum is σ = 45727200267840. Its totient is φ = 6926516428800.

The previous prime is 18427228386967. The next prime is 18427228387019. The reversal of 18427228387000 is 78382272481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10088112 + ... + 11773888.

Almost surely, 2^{18427228387000} is an apocalyptic number.

18427228387000 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 18427228387000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22863600133920).

18427228387000 is an abundant number, since it is smaller than the sum of its proper divisors (27299971880840).

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

18427228387000 is a wasteful number, since it uses less digits than its factorization.

18427228387000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686458 (or 1686444 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 18427228387000 in words is "eighteen trillion, four hundred twenty-seven billion, two hundred twenty-eight million, three hundred eighty-seven thousand".