16452164623 has 4 divisors (see below), whose sum is σ = 16489641520. Its totient is φ = 16414687728.

The previous prime is 16452164557. The next prime is 16452164627. The reversal of 16452164623 is 32646125461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32646125461 = 421 ⋅77544241.

It is a cyclic number.

It is not a de Polignac number, because 16452164623 - 2⁹ = 16452164111 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 (16452164627) 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, 18737790 + ... + 18738667.

It is an arithmetic number, because the mean of its divisors is an integer number (4122410380).

Almost surely, 2^16452164623 is an apocalyptic number.

16452164623 is a deficient number, since it is larger than the sum of its proper divisors (37476897).

16452164623 is an equidigital number, since it uses as much as digits as its factorization.

16452164623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37476896.

The product of its digits is 207360, while the sum is 40.

The spelling of 16452164623 in words is "sixteen billion, four hundred fifty-two million, one hundred sixty-four thousand, six hundred twenty-three".