16304746985 has 4 divisors (see below), whose sum is σ = 19565696388. Its totient is φ = 13043797584.

The previous prime is 16304746979. The next prime is 16304746993. The reversal of 16304746985 is 58964740361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4251561616 + 12053185369 = 65204^2 + 109787^2 .

It is a cyclic number.

It is not a de Polignac number, because 16304746985 - 2⁶ = 16304746921 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1630474694 + ... + 1630474703.

It is an arithmetic number, because the mean of its divisors is an integer number (4891424097).

Almost surely, 2^16304746985 is an apocalyptic number.

It is an amenable number.

16304746985 is a deficient number, since it is larger than the sum of its proper divisors (3260949403).

16304746985 is an equidigital number, since it uses as much as digits as its factorization.

16304746985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260949402.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 16304746985 in words is "sixteen billion, three hundred four million, seven hundred forty-six thousand, nine hundred eighty-five".