16393330885 has 4 divisors (see below), whose sum is σ = 19671997068. Its totient is φ = 13114664704.

The previous prime is 16393330871. The next prime is 16393330897. The reversal of 16393330885 is 58803339361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58803339361 = 13 ⋅4523333797.

It can be written as a sum of positive squares in 2 ways, for example, as 8767325956 + 7626004929 = 93634^2 + 87327^2 .

It is a cyclic number.

It is not a de Polignac number, because 16393330885 - 2⁷ = 16393330757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639333084 + ... + 1639333093.

It is an arithmetic number, because the mean of its divisors is an integer number (4917999267).

Almost surely, 2^16393330885 is an apocalyptic number.

It is an amenable number.

16393330885 is a deficient number, since it is larger than the sum of its proper divisors (3278666183).

16393330885 is an equidigital number, since it uses as much as digits as its factorization.

16393330885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278666182.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 16393330885 in words is "sixteen billion, three hundred ninety-three million, three hundred thirty thousand, eight hundred eighty-five".