21492841988160 has 336 divisors, whose sum is σ = 74377804650240. Its totient is φ = 5696466186240.

The previous prime is 21492841988129. The next prime is 21492841988171. The reversal of 21492841988160 is 6188914829412.

21492841988160 is a `hidden beast` number, since 2 + 1 + 4 + 9 + 284 + 198 + 8 + 160 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 979474149 + ... + 979496091.

It is an arithmetic number, because the mean of its divisors is an integer number (221362513840).

Almost surely, 2^{21492841988160} is an apocalyptic number.

21492841988160 is a gapful number since it is divisible by the number (20) 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 21492841988160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37188902325120).

21492841988160 is an abundant number, since it is smaller than the sum of its proper divisors (52884962662080).

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

21492841988160 is a wasteful number, since it uses less digits than its factorization.

21492841988160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24026 (or 24013 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 21492841988160 in words is "twenty-one trillion, four hundred ninety-two billion, eight hundred forty-one million, nine hundred eighty-eight thousand, one hundred sixty".