18228561005760 has 448 divisors, whose sum is σ = 68903784407040. Its totient is φ = 3995127152640.

The previous prime is 18228561005747. The next prime is 18228561005827. The reversal of 18228561005760 is 6750016582281.

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22305492 + ... + 23108268.

Almost surely, 2^{18228561005760} is an apocalyptic number.

18228561005760 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 18228561005760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34451892203520).

18228561005760 is an abundant number, since it is smaller than the sum of its proper divisors (50675223401280).

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

18228561005760 is a wasteful number, since it uses less digits than its factorization.

18228561005760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802944 (or 802934 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 18228561005760 in words is "eighteen trillion, two hundred twenty-eight billion, five hundred sixty-one million, five thousand, seven hundred sixty".