16723344671 has 16 divisors (see below), whose sum is σ = 18341406720. Its totient is φ = 15121698720.

The previous prime is 16723344641. The next prime is 16723344697. The reversal of 16723344671 is 17644332761.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16723344671 - 2²⁶ = 16656235807 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 (16723344641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3822041 + ... + 3826413.

It is an arithmetic number, because the mean of its divisors is an integer number (1146337920).

Almost surely, 2^16723344671 is an apocalyptic number.

16723344671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16723344671 is a deficient number, since it is larger than the sum of its proper divisors (1618062049).

16723344671 is a wasteful number, since it uses less digits than its factorization.

16723344671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166.

The product of its digits is 508032, while the sum is 44.

The spelling of 16723344671 in words is "sixteen billion, seven hundred twenty-three million, three hundred forty-four thousand, six hundred seventy-one".