17073438066 has 56 divisors (see below), whose sum is σ = 38449881900. Its totient is φ = 5683408416.

The previous prime is 17073438023. The next prime is 17073438071. The reversal of 17073438066 is 66083437071.

17073438066 is a `hidden beast` number, since 170 + 7 + 343 + 80 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16635582441 + 437855625 = 128979^2 + 20925^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1119460 + ... + 1134608.

Almost surely, 2^17073438066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17073438066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19224940950).

17073438066 is an abundant number, since it is smaller than the sum of its proper divisors (21376443834).

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

17073438066 is an equidigital number, since it uses as much as digits as its factorization.

17073438066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15942 (or 15927 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 17073438066 in words is "seventeen billion, seventy-three million, four hundred thirty-eight thousand, sixty-six".