16443650323 has 4 divisors (see below), whose sum is σ = 16974090688. Its totient is φ = 15913209960.

The previous prime is 16443650317. The next prime is 16443650381. The reversal of 16443650323 is 32305634461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32305634461 = 47969 ⋅673469.

It is a cyclic number.

It is not a de Polignac number, because 16443650323 - 2¹⁷ = 16443519251 is a prime.

It is a super-3 number, since 3×16443650323³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16443650023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265220136 + ... + 265220197.

It is an arithmetic number, because the mean of its divisors is an integer number (4243522672).

Almost surely, 2^16443650323 is an apocalyptic number.

16443650323 is a deficient number, since it is larger than the sum of its proper divisors (530440365).

16443650323 is an equidigital number, since it uses as much as digits as its factorization.

16443650323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530440364.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 16443650323 in words is "sixteen billion, four hundred forty-three million, six hundred fifty thousand, three hundred twenty-three".