16379966399 has 2 divisors, whose sum is σ = 16379966400. Its totient is φ = 16379966398.

The previous prime is 16379966371. The next prime is 16379966417. The reversal of 16379966399 is 99366997361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16379966399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16379966359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189983199 + 8189983200.

It is an arithmetic number, because the mean of its divisors is an integer number (8189983200).

Almost surely, 2^16379966399 is an apocalyptic number.

16379966399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16379966399 is an equidigital number, since it uses as much as digits as its factorization.

16379966399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89282088, while the sum is 68.

The spelling of 16379966399 in words is "sixteen billion, three hundred seventy-nine million, nine hundred sixty-six thousand, three hundred ninety-nine".