17044772345 has 4 divisors (see below), whose sum is σ = 20453726820. Its totient is φ = 13635817872.

The previous prime is 17044772323. The next prime is 17044772363. The reversal of 17044772345 is 54327744071.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8944052329 + 8100720016 = 94573^2 + 90004^2 .

It is a cyclic number.

It is not a de Polignac number, because 17044772345 - 2²⁴ = 17027995129 is a prime.

It is a super-3 number, since 3×17044772345³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17044772296 and 17044772305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704477230 + ... + 1704477239.

It is an arithmetic number, because the mean of its divisors is an integer number (5113431705).

Almost surely, 2^17044772345 is an apocalyptic number.

It is an amenable number.

17044772345 is a deficient number, since it is larger than the sum of its proper divisors (3408954475).

17044772345 is an equidigital number, since it uses as much as digits as its factorization.

17044772345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408954474.

The product of its (nonzero) digits is 658560, while the sum is 44.

The spelling of 17044772345 in words is "seventeen billion, forty-four million, seven hundred seventy-two thousand, three hundred forty-five".