17223947245 has 4 divisors (see below), whose sum is σ = 20668736700. Its totient is φ = 13779157792.

The previous prime is 17223947243. The next prime is 17223947329. The reversal of 17223947245 is 54274932271.

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 6415849801 + 10808097444 = 80099^2 + 103962^2 .

It is a cyclic number.

It is not a de Polignac number, because 17223947245 - 2¹ = 17223947243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17223947195 and 17223947204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17223947243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722394720 + ... + 1722394729.

It is an arithmetic number, because the mean of its divisors is an integer number (5167184175).

Almost surely, 2^17223947245 is an apocalyptic number.

It is an amenable number.

17223947245 is a deficient number, since it is larger than the sum of its proper divisors (3444789455).

17223947245 is an equidigital number, since it uses as much as digits as its factorization.

17223947245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444789454.

The product of its digits is 846720, while the sum is 46.

The spelling of 17223947245 in words is "seventeen billion, two hundred twenty-three million, nine hundred forty-seven thousand, two hundred forty-five".