11722746005 has 4 divisors (see below), whose sum is σ = 14067295212. Its totient is φ = 9378196800.

The previous prime is 11722745977. The next prime is 11722746059. The reversal of 11722746005 is 50064722711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50064722711 = 43 ⋅1164295877.

It can be written as a sum of positive squares in 2 ways, for example, as 6519432049 + 5203313956 = 80743^2 + 72134^2 .

It is not a de Polignac number, because 11722746005 - 2¹² = 11722741909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172274596 + ... + 1172274605.

It is an arithmetic number, because the mean of its divisors is an integer number (3516823803).

Almost surely, 2^11722746005 is an apocalyptic number.

It is an amenable number.

11722746005 is a deficient number, since it is larger than the sum of its proper divisors (2344549207).

11722746005 is an equidigital number, since it uses as much as digits as its factorization.

11722746005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344549206.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 11722746005 in words is "eleven billion, seven hundred twenty-two million, seven hundred forty-six thousand, five".