16335638213 has 2 divisors, whose sum is σ = 16335638214. Its totient is φ = 16335638212.

The previous prime is 16335638191. The next prime is 16335638261. The reversal of 16335638213 is 31283653361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15491038369 + 844599844 = 124463^2 + 29062^2 .

It is an emirp because it is prime and its reverse (31283653361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16335638213 - 2⁸ = 16335637957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16335638273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8167819106 + 8167819107.

It is an arithmetic number, because the mean of its divisors is an integer number (8167819107).

Almost surely, 2^16335638213 is an apocalyptic number.

It is an amenable number.

16335638213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16335638213 is an equidigital number, since it uses as much as digits as its factorization.

16335638213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The spelling of 16335638213 in words is "sixteen billion, three hundred thirty-five million, six hundred thirty-eight thousand, two hundred thirteen".