20012323399 has 2 divisors, whose sum is σ = 20012323400. Its totient is φ = 20012323398.

The previous prime is 20012323187. The next prime is 20012323403. The reversal of 20012323399 is 99332321002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012323399 - 2¹⁵ = 20012290631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012123399) 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, 10006161699 + 10006161700.

It is an arithmetic number, because the mean of its divisors is an integer number (10006161700).

Almost surely, 2^20012323399 is an apocalyptic number.

20012323399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012323399 is an equidigital number, since it uses as much as digits as its factorization.

20012323399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 20012323399 in words is "twenty billion, twelve million, three hundred twenty-three thousand, three hundred ninety-nine".