11726707217 has 8 divisors (see below), whose sum is σ = 11811868200. Its totient is φ = 11641632640.

The previous prime is 11726707171. The next prime is 11726707229. The reversal of 11726707217 is 71270762711.

It can be written as a sum of positive squares in 4 ways, for example, as 1936792081 + 9789915136 = 44009^2 + 98944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11726707217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11756707217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 264467 + ... + 305607.

It is an arithmetic number, because the mean of its divisors is an integer number (1476483525).

Almost surely, 2^11726707217 is an apocalyptic number.

It is an amenable number.

11726707217 is a deficient number, since it is larger than the sum of its proper divisors (85160983).

11726707217 is a wasteful number, since it uses less digits than its factorization.

11726707217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43203.

The product of its (nonzero) digits is 57624, while the sum is 41.

The spelling of 11726707217 in words is "eleven billion, seven hundred twenty-six million, seven hundred seven thousand, two hundred seventeen".