16442049972811 has 2 divisors, whose sum is σ = 16442049972812. Its totient is φ = 16442049972810.

The previous prime is 16442049972809. The next prime is 16442049972863. The reversal of 16442049972811 is 11827994024461.

16442049972811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (11827994024461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16442049972811 - 2¹ = 16442049972809 is a prime.

It is a super-3 number, since 3×16442049972811³ (a number of 41 digits) contains 333 as substring.

Together with 16442049972809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16442049472811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221024986405 + 8221024986406.

It is an arithmetic number, because the mean of its divisors is an integer number (8221024986406).

Almost surely, 2^{16442049972811} is an apocalyptic number.

16442049972811 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442049972811 is an equidigital number, since it uses as much as digits as its factorization.

16442049972811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 16442049972811 in words is "sixteen trillion, four hundred forty-two billion, forty-nine million, nine hundred seventy-two thousand, eight hundred eleven".