21802059042912 has 384 divisors, whose sum is σ = 66080992320000. Its totient is φ = 7075427189760.

The previous prime is 21802059042893. The next prime is 21802059042989. The reversal of 21802059042912 is 21924095020812.

21802059042912 is a `hidden beast` number, since 2 + 1 + 8 + 0 + 2 + 0 + 590 + 42 + 9 + 12 = 666.

It is a congruent number.

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, 1431795043 + ... + 1431810269.

It is an arithmetic number, because the mean of its divisors is an integer number (172085917500).

Almost surely, 2^{21802059042912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21802059042912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33040496160000).

21802059042912 is an abundant number, since it is smaller than the sum of its proper divisors (44278933277088).

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

21802059042912 is an equidigital number, since it uses as much as digits as its factorization.

21802059042912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15798 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 21802059042912 in words is "twenty-one trillion, eight hundred two billion, fifty-nine million, forty-two thousand, nine hundred twelve".