318026115985681 has 8 divisors (see below), whose sum is σ = 336735091981800. Its totient is φ = 299317313035008.

The previous prime is 318026115985609. The next prime is 318026115985861. The reversal of 318026115985681 is 186589511620813.

It can be written as a sum of positive squares in 4 ways, for example, as 112729373873281 + 205296742112400 = 10617409^2 + 14328180^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 318026115985681 - 2³⁷ = 317888677032209 is a prime.

It is a super-2 number, since 2×318026115985681² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318026115935681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39468106 + ... + 46837843.

It is an arithmetic number, because the mean of its divisors is an integer number (42091886497725).

Almost surely, 2^{318026115985681} is an apocalyptic number.

It is an amenable number.

318026115985681 is a deficient number, since it is larger than the sum of its proper divisors (18708975996119).

318026115985681 is a wasteful number, since it uses less digits than its factorization.

318026115985681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86522723.

The product of its (nonzero) digits is 24883200, while the sum is 64.

The spelling of 318026115985681 in words is "three hundred eighteen trillion, twenty-six billion, one hundred fifteen million, nine hundred eighty-five thousand, six hundred eighty-one".