16416664737019 has 2 divisors, whose sum is σ = 16416664737020. Its totient is φ = 16416664737018.

The previous prime is 16416664736987. The next prime is 16416664737061. The reversal of 16416664737019 is 91073746661461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16416664737019 - 2⁵ = 16416664736987 is a prime.

It is a super-3 number, since 3×16416664737019³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (16416664737919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8208332368509 + 8208332368510.

It is an arithmetic number, because the mean of its divisors is an integer number (8208332368510).

Almost surely, 2^{16416664737019} is an apocalyptic number.

16416664737019 is a deficient number, since it is larger than the sum of its proper divisors (1).

16416664737019 is an equidigital number, since it uses as much as digits as its factorization.

16416664737019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27433728, while the sum is 61.

The spelling of 16416664737019 in words is "sixteen trillion, four hundred sixteen billion, six hundred sixty-four million, seven hundred thirty-seven thousand, nineteen".