16771617223 has 4 divisors (see below), whose sum is σ = 17758182960. Its totient is φ = 15785051488.

The previous prime is 16771617221. The next prime is 16771617229. The reversal of 16771617223 is 32271617761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16771617223 - 2¹ = 16771617221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16771617223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16771617221) 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, 493282843 + ... + 493282876.

It is an arithmetic number, because the mean of its divisors is an integer number (4439545740).

Almost surely, 2^16771617223 is an apocalyptic number.

16771617223 is a deficient number, since it is larger than the sum of its proper divisors (986565737).

16771617223 is an equidigital number, since it uses as much as digits as its factorization.

16771617223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986565736.

The product of its digits is 148176, while the sum is 43.

The spelling of 16771617223 in words is "sixteen billion, seven hundred seventy-one million, six hundred seventeen thousand, two hundred twenty-three".