16399201003 has 4 divisors (see below), whose sum is σ = 16399467088. Its totient is φ = 16398934920.

The previous prime is 16399200991. The next prime is 16399201069. The reversal of 16399201003 is 30010299361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16399201003 - 2¹⁷ = 16399069931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16399201003.

It is not an unprimeable number, because it can be changed into a prime (16399201303) 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 in 3 ways as a sum of consecutive naturals, for example, 12418 + ... + 181528.

It is an arithmetic number, because the mean of its divisors is an integer number (4099866772).

Almost surely, 2^16399201003 is an apocalyptic number.

16399201003 is a deficient number, since it is larger than the sum of its proper divisors (266085).

16399201003 is an equidigital number, since it uses as much as digits as its factorization.

16399201003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266084.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 16399201003 in words is "sixteen billion, three hundred ninety-nine million, two hundred one thousand, three".