17423878213 has 4 divisors (see below), whose sum is σ = 19913003680. Its totient is φ = 14934752748.

The previous prime is 17423878193. The next prime is 17423878231. The reversal of 17423878213 is 31287832471.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17423878213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17423848213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244562723 + ... + 1244562736.

It is an arithmetic number, because the mean of its divisors is an integer number (4978250920).

Almost surely, 2^17423878213 is an apocalyptic number.

It is an amenable number.

17423878213 is a deficient number, since it is larger than the sum of its proper divisors (2489125467).

17423878213 is an equidigital number, since it uses as much as digits as its factorization.

17423878213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489125466.

The product of its digits is 451584, while the sum is 46.

The spelling of 17423878213 in words is "seventeen billion, four hundred twenty-three million, eight hundred seventy-eight thousand, two hundred thirteen".