16723812673 has 4 divisors (see below), whose sum is σ = 17604013360. Its totient is φ = 15843611988.

The previous prime is 16723812653. The next prime is 16723812689. The reversal of 16723812673 is 37621832761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37621832761 = 109 ⋅345154429.

It is a cyclic number.

It is not a de Polignac number, because 16723812673 - 2⁵ = 16723812641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16723812653) 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, 440100315 + ... + 440100352.

It is an arithmetic number, because the mean of its divisors is an integer number (4401003340).

Almost surely, 2^16723812673 is an apocalyptic number.

It is an amenable number.

16723812673 is a deficient number, since it is larger than the sum of its proper divisors (880200687).

16723812673 is an equidigital number, since it uses as much as digits as its factorization.

16723812673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880200686.

The product of its digits is 508032, while the sum is 46.

The spelling of 16723812673 in words is "sixteen billion, seven hundred twenty-three million, eight hundred twelve thousand, six hundred seventy-three".