20465453399 has 2 divisors, whose sum is σ = 20465453400. Its totient is φ = 20465453398.

The previous prime is 20465453363. The next prime is 20465453401. The reversal of 20465453399 is 99335456402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20465453399 - 2³² = 16170486103 is a prime.

Together with 20465453401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20465453329) 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, 10232726699 + 10232726700.

It is an arithmetic number, because the mean of its divisors is an integer number (10232726700).

Almost surely, 2^20465453399 is an apocalyptic number.

20465453399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20465453399 is an equidigital number, since it uses as much as digits as its factorization.

20465453399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 20465453399 in words is "twenty billion, four hundred sixty-five million, four hundred fifty-three thousand, three hundred ninety-nine".