18645498228000 has 2304 divisors, whose sum is σ = 78732186624000. Its totient is φ = 3828180787200.

The previous prime is 18645498227999. The next prime is 18645498228031. The reversal of 18645498228000 is 82289454681.

It is a super-2 number, since 2×18645498228000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 38286443757 + ... + 38286444243.

It is an arithmetic number, because the mean of its divisors is an integer number (34171956000).

Almost surely, 2^{18645498228000} is an apocalyptic number.

18645498228000 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 18645498228000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39366093312000).

18645498228000 is an abundant number, since it is smaller than the sum of its proper divisors (60086688396000).

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

18645498228000 is a wasteful number, since it uses less digits than its factorization.

18645498228000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 18645498228000 in words is "eighteen trillion, six hundred forty-five billion, four hundred ninety-eight million, two hundred twenty-eight thousand".