18485801441280 has 672 divisors, whose sum is σ = 66801300274800. Its totient is φ = 4907381096448.

The previous prime is 18485801441227. The next prime is 18485801441293. The reversal of 18485801441280 is 8214410858481.

18485801441280 is a `hidden beast` number, since 1 + 8 + 4 + 8 + 580 + 1 + 44 + 12 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1694540466 + ... + 1694551374.

Almost surely, 2^{18485801441280} is an apocalyptic number.

18485801441280 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 18485801441280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33400650137400).

18485801441280 is an abundant number, since it is smaller than the sum of its proper divisors (48315498833520).

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

18485801441280 is an equidigital number, since it uses as much as digits as its factorization.

18485801441280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181 (or 11146 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 54.

The spelling of 18485801441280 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred one million, four hundred forty-one thousand, two hundred eighty".