16442667642799 has 2 divisors, whose sum is σ = 16442667642800. Its totient is φ = 16442667642798.

The previous prime is 16442667642767. The next prime is 16442667642937. The reversal of 16442667642799 is 99724676624461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16442667642799 - 2⁵ = 16442667642767 is a prime.

It is a super-3 number, since 3×16442667642799³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442667645799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221333821399 + 8221333821400.

It is an arithmetic number, because the mean of its divisors is an integer number (8221333821400).

Almost surely, 2^{16442667642799} is an apocalyptic number.

16442667642799 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442667642799 is an equidigital number, since it uses as much as digits as its factorization.

16442667642799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1316818944, while the sum is 73.

The spelling of 16442667642799 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-seven million, six hundred forty-two thousand, seven hundred ninety-nine".