16326655399 has 2 divisors, whose sum is σ = 16326655400. Its totient is φ = 16326655398.

The previous prime is 16326655391. The next prime is 16326655439. The reversal of 16326655399 is 99355662361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16326655399 - 2³ = 16326655391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16326655391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163327699 + 8163327700.

It is an arithmetic number, because the mean of its divisors is an integer number (8163327700).

Almost surely, 2^16326655399 is an apocalyptic number.

16326655399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16326655399 is an equidigital number, since it uses as much as digits as its factorization.

16326655399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7873200, while the sum is 55.

The spelling of 16326655399 in words is "sixteen billion, three hundred twenty-six million, six hundred fifty-five thousand, three hundred ninety-nine".