16745227717 has 4 divisors (see below), whose sum is σ = 17473281120. Its totient is φ = 16017174316.

The previous prime is 16745227703. The next prime is 16745227769. The reversal of 16745227717 is 71772254761.

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.

It is a cyclic number.

It is not a de Polignac number, because 16745227717 - 2²³ = 16736839109 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16745827717) 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, 364026667 + ... + 364026712.

It is an arithmetic number, because the mean of its divisors is an integer number (4368320280).

Almost surely, 2^16745227717 is an apocalyptic number.

It is an amenable number.

16745227717 is a deficient number, since it is larger than the sum of its proper divisors (728053403).

16745227717 is an equidigital number, since it uses as much as digits as its factorization.

16745227717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728053402.

The product of its digits is 1152480, while the sum is 49.

The spelling of 16745227717 in words is "sixteen billion, seven hundred forty-five million, two hundred twenty-seven thousand, seven hundred seventeen".