20326405417 has 4 divisors (see below), whose sum is σ = 20758882176. Its totient is φ = 19893928660.

The previous prime is 20326405369. The next prime is 20326405481. The reversal of 20326405417 is 71450462302.

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 20326405417 - 2¹⁹ = 20325881129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20326405217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216238309 + ... + 216238402.

It is an arithmetic number, because the mean of its divisors is an integer number (5189720544).

Almost surely, 2^20326405417 is an apocalyptic number.

It is an amenable number.

20326405417 is a deficient number, since it is larger than the sum of its proper divisors (432476759).

20326405417 is an equidigital number, since it uses as much as digits as its factorization.

20326405417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432476758.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 20326405417 its reverse (71450462302), we get a palindrome (91776867719).

The spelling of 20326405417 in words is "twenty billion, three hundred twenty-six million, four hundred five thousand, four hundred seventeen".