11722543417 has 4 divisors (see below), whose sum is σ = 12624277540. Its totient is φ = 10820809296.

The previous prime is 11722543381. The next prime is 11722543433. The reversal of 11722543417 is 71434522711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6024709161 + 5697834256 = 77619^2 + 75484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11722543417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11722543447) 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, 450867042 + ... + 450867067.

It is an arithmetic number, because the mean of its divisors is an integer number (3156069385).

Almost surely, 2^11722543417 is an apocalyptic number.

It is an amenable number.

11722543417 is a deficient number, since it is larger than the sum of its proper divisors (901734123).

11722543417 is an equidigital number, since it uses as much as digits as its factorization.

11722543417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901734122.

The product of its digits is 47040, while the sum is 37.

The spelling of 11722543417 in words is "eleven billion, seven hundred twenty-two million, five hundred forty-three thousand, four hundred seventeen".