17145745794 has 160 divisors (see below), whose sum is σ = 42894821376. Its totient is φ = 5093591040.

The previous prime is 17145745783. The next prime is 17145745829. The reversal of 17145745794 is 49754754171.

17145745794 is a `hidden beast` number, since 1 + 7 + 14 + 57 + 4 + 579 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 17145745794.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4010442 + ... + 4014714.

Almost surely, 2^17145745794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17145745794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21447410688).

17145745794 is an abundant number, since it is smaller than the sum of its proper divisors (25749075582).

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

17145745794 is a wasteful number, since it uses less digits than its factorization.

17145745794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382 (or 4373 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The spelling of 17145745794 in words is "seventeen billion, one hundred forty-five million, seven hundred forty-five thousand, seven hundred ninety-four".