16217383997 has 2 divisors, whose sum is σ = 16217383998. Its totient is φ = 16217383996.

The previous prime is 16217383979. The next prime is 16217384003. The reversal of 16217383997 is 79938371261.

16217383997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (16217383979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15812811001 + 404572996 = 125749^2 + 20114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16217383997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16217383967) 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, 8108691998 + 8108691999.

It is an arithmetic number, because the mean of its divisors is an integer number (8108691999).

Almost surely, 2^16217383997 is an apocalyptic number.

It is an amenable number.

16217383997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16217383997 is an equidigital number, since it uses as much as digits as its factorization.

16217383997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The spelling of 16217383997 in words is "sixteen billion, two hundred seventeen million, three hundred eighty-three thousand, nine hundred ninety-seven".