12317817726 has 12 divisors (see below), whose sum is σ = 26688605112. Its totient is φ = 4105939236.

The previous prime is 12317817719. The next prime is 12317817731. The reversal of 12317817726 is 62771871321.

It is a super-2 number, since 2×12317817726² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 342161586 + ... + 342161621.

It is an arithmetic number, because the mean of its divisors is an integer number (2224050426).

Almost surely, 2^12317817726 is an apocalyptic number.

12317817726 is an abundant number, since it is smaller than the sum of its proper divisors (14370787386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12317817726 is a wasteful number, since it uses less digits than its factorization.

12317817726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684323215 (or 684323212 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The spelling of 12317817726 in words is "twelve billion, three hundred seventeen million, eight hundred seventeen thousand, seven hundred twenty-six".