19906550944160 has 96 divisors (see below), whose sum is σ = 47694368937600. Its totient is φ = 7850016670720.

The previous prime is 19906550944157. The next prime is 19906550944193. The reversal of 19906550944160 is 6144905560991.

It is a self number, because there is not a number n which added to its sum of digits gives 19906550944160.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251118611 + ... + 251197869.

It is an arithmetic number, because the mean of its divisors is an integer number (496816343100).

Almost surely, 2^{19906550944160} is an apocalyptic number.

19906550944160 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 19906550944160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23847184468800).

19906550944160 is an abundant number, since it is smaller than the sum of its proper divisors (27787817993440).

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

19906550944160 is a wasteful number, since it uses less digits than its factorization.

19906550944160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101454 (or 101446 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 59.

The spelling of 19906550944160 in words is "nineteen trillion, nine hundred six billion, five hundred fifty million, nine hundred forty-four thousand, one hundred sixty".