18449898405120 has 5184 divisors, whose sum is σ = 90839889504000. Its totient is φ = 3560678424576.

The previous prime is 18449898405073. The next prime is 18449898405163. The reversal of 18449898405120 is 2150489894481.

18449898405120 is a `hidden beast` number, since 1 + 8 + 4 + 498 + 98 + 4 + 0 + 51 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5184).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 636203393266 + ... + 636203393294.

Almost surely, 2^{18449898405120} is an apocalyptic number.

18449898405120 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 18449898405120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45419944752000).

18449898405120 is an abundant number, since it is smaller than the sum of its proper divisors (72389991098880).

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

18449898405120 is an equidigital number, since it uses as much as digits as its factorization.

18449898405120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 63.

The spelling of 18449898405120 in words is "eighteen trillion, four hundred forty-nine billion, eight hundred ninety-eight million, four hundred five thousand, one hundred twenty".