20320943417 has 4 divisors (see below), whose sum is σ = 21204462720. Its totient is φ = 19437424116.

The previous prime is 20320943399. The next prime is 20320943429. The reversal of 20320943417 is 71434902302.

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 not a de Polignac number, because 20320943417 - 2¹⁰ = 20320942393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320943717) 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, 441759617 + ... + 441759662.

It is an arithmetic number, because the mean of its divisors is an integer number (5301115680).

Almost surely, 2^20320943417 is an apocalyptic number.

It is an amenable number.

20320943417 is a deficient number, since it is larger than the sum of its proper divisors (883519303).

20320943417 is an equidigital number, since it uses as much as digits as its factorization.

20320943417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883519302.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 20320943417 in words is "twenty billion, three hundred twenty million, nine hundred forty-three thousand, four hundred seventeen".