16445223023 has 4 divisors (see below), whose sum is σ = 16563534120. Its totient is φ = 16326911928.

The previous prime is 16445223001. The next prime is 16445223073. The reversal of 16445223023 is 32032254461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32032254461 = 31 ⋅1033298531.

It is a cyclic number.

It is not a de Polignac number, because 16445223023 - 2¹² = 16445218927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16445223073) 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, 59155340 + ... + 59155617.

It is an arithmetic number, because the mean of its divisors is an integer number (4140883530).

Almost surely, 2^16445223023 is an apocalyptic number.

16445223023 is a deficient number, since it is larger than the sum of its proper divisors (118311097).

16445223023 is a wasteful number, since it uses less digits than its factorization.

16445223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118311096.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 16445223023 its reverse (32032254461), we get a palindrome (48477477484).

The spelling of 16445223023 in words is "sixteen billion, four hundred forty-five million, two hundred twenty-three thousand, twenty-three".