16001111663 has 2 divisors, whose sum is σ = 16001111664. Its totient is φ = 16001111662.

The previous prime is 16001111617. The next prime is 16001111689. The reversal of 16001111663 is 36611110061.

It is an a-pointer prime, because the next prime (16001111689) can be obtained adding 16001111663 to its sum of digits (26).

It is a strong prime.

It is an emirp because it is prime and its reverse (36611110061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16001111663 - 2⁸ = 16001111407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16001111963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000555831 + 8000555832.

It is an arithmetic number, because the mean of its divisors is an integer number (8000555832).

Almost surely, 2^16001111663 is an apocalyptic number.

16001111663 is a deficient number, since it is larger than the sum of its proper divisors (1).

16001111663 is an equidigital number, since it uses as much as digits as its factorization.

16001111663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 16001111663 in words is "sixteen billion, one million, one hundred eleven thousand, six hundred sixty-three".