11726352686681 has 8 divisors (see below), whose sum is σ = 11835242661000. Its totient is φ = 11617486508160.

The previous prime is 11726352686663. The next prime is 11726352686683. The reversal of 11726352686681 is 18668625362711.

It can be written as a sum of positive squares in 4 ways, for example, as 4840950446656 + 6885402240025 = 2200216^2 + 2624005^2 .

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-11726352686681 is a prime.

It is a super-2 number, since 2×11726352686681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11726352686683) 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, 4958030 + ... + 6930711.

It is an arithmetic number, because the mean of its divisors is an integer number (1479405332625).

Almost surely, 2^{11726352686681} is an apocalyptic number.

It is an amenable number.

11726352686681 is a deficient number, since it is larger than the sum of its proper divisors (108889974319).

11726352686681 is a wasteful number, since it uses less digits than its factorization.

11726352686681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11897899.

The product of its digits is 34836480, while the sum is 62.

The spelling of 11726352686681 in words is "eleven trillion, seven hundred twenty-six billion, three hundred fifty-two million, six hundred eighty-six thousand, six hundred eighty-one".