16288317993 has 8 divisors (see below), whose sum is σ = 21721268800. Its totient is φ = 10857122928.

The previous prime is 16288317989. The next prime is 16288318063. The reversal of 16288317993 is 39971388261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16288317993 - 2² = 16288317989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16288317923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417133 + ... + 454506.

It is an arithmetic number, because the mean of its divisors is an integer number (2715158600).

Almost surely, 2^16288317993 is an apocalyptic number.

It is an amenable number.

16288317993 is a deficient number, since it is larger than the sum of its proper divisors (5432950807).

16288317993 is an equidigital number, since it uses as much as digits as its factorization.

16288317993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877871.

The product of its digits is 3919104, while the sum is 57.

The spelling of 16288317993 in words is "sixteen billion, two hundred eighty-eight million, three hundred seventeen thousand, nine hundred ninety-three".