16442667642619 has 2 divisors, whose sum is σ = 16442667642620. Its totient is φ = 16442667642618.

The previous prime is 16442667642617. The next prime is 16442667642637. The reversal of 16442667642619 is 91624676624461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16442667642619 - 2¹ = 16442667642617 is a prime.

It is a super-3 number, since 3×16442667642619³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 16442667642617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16442667642617) 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, 8221333821309 + 8221333821310.

It is an arithmetic number, because the mean of its divisors is an integer number (8221333821310).

Almost surely, 2^{16442667642619} is an apocalyptic number.

16442667642619 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442667642619 is an equidigital number, since it uses as much as digits as its factorization.

16442667642619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 64.

The spelling of 16442667642619 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-seven million, six hundred forty-two thousand, six hundred nineteen".