16645764233 has 8 divisors (see below), whose sum is σ = 19027364352. Its totient is φ = 14265072576.

The previous prime is 16645764167. The next prime is 16645764269. The reversal of 16645764233 is 33246754661.

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

It is a cyclic number.

It is not a de Polignac number, because 16645764233 - 2¹⁶ = 16645698697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16645764533) 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, 187385 + ... + 261542.

It is an arithmetic number, because the mean of its divisors is an integer number (2378420544).

Almost surely, 2^16645764233 is an apocalyptic number.

It is an amenable number.

16645764233 is a deficient number, since it is larger than the sum of its proper divisors (2381600119).

16645764233 is an equidigital number, since it uses as much as digits as its factorization.

16645764233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454231.

The product of its digits is 2177280, while the sum is 47.

The spelling of 16645764233 in words is "sixteen billion, six hundred forty-five million, seven hundred sixty-four thousand, two hundred thirty-three".