16442806811 has 2 divisors, whose sum is σ = 16442806812. Its totient is φ = 16442806810.

The previous prime is 16442806799. The next prime is 16442806873. The reversal of 16442806811 is 11860824461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442806811 is a prime.

It is a super-3 number, since 3×16442806811³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16442806411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221403405 + 8221403406.

It is an arithmetic number, because the mean of its divisors is an integer number (8221403406).

Almost surely, 2^16442806811 is an apocalyptic number.

16442806811 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442806811 is an equidigital number, since it uses as much as digits as its factorization.

16442806811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 16442806811 in words is "sixteen billion, four hundred forty-two million, eight hundred six thousand, eight hundred eleven".