16664288423 has 2 divisors, whose sum is σ = 16664288424. Its totient is φ = 16664288422.

The previous prime is 16664288351. The next prime is 16664288467. The reversal of 16664288423 is 32488246661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16664288423 - 2¹⁰ = 16664287399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16664288023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332144211 + 8332144212.

It is an arithmetic number, because the mean of its divisors is an integer number (8332144212).

Almost surely, 2^16664288423 is an apocalyptic number.

16664288423 is a deficient number, since it is larger than the sum of its proper divisors (1).

16664288423 is an equidigital number, since it uses as much as digits as its factorization.

16664288423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2654208, while the sum is 50.

The spelling of 16664288423 in words is "sixteen billion, six hundred sixty-four million, two hundred eighty-eight thousand, four hundred twenty-three".