20013416321 has 2 divisors, whose sum is σ = 20013416322. Its totient is φ = 20013416320.

The previous prime is 20013416317. The next prime is 20013416323. The reversal of 20013416321 is 12361431002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14421367921 + 5592048400 = 120089^2 + 74780^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013416321 - 2² = 20013416317 is a prime.

Together with 20013416323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20013416323) 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 as a sum of consecutive naturals, namely, 10006708160 + 10006708161.

It is an arithmetic number, because the mean of its divisors is an integer number (10006708161).

Almost surely, 2^20013416321 is an apocalyptic number.

It is an amenable number.

20013416321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013416321 is an equidigital number, since it uses as much as digits as its factorization.

20013416321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20013416321 its reverse (12361431002), we get a palindrome (32374847323).

The spelling of 20013416321 in words is "twenty billion, thirteen million, four hundred sixteen thousand, three hundred twenty-one".