318742704967681 has 16 divisors (see below), whose sum is σ = 327126115814400. Its totient is φ = 310447503819648.

The previous prime is 318742704967649. The next prime is 318742704967721. The reversal of 318742704967681 is 186769407247813.

It is a cyclic number.

It is not a de Polignac number, because 318742704967681 - 2⁵ = 318742704967649 is a prime.

It is a super-2 number, since 2×318742704967681² (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 (318742704967781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70968160 + ... + 75325726.

It is an arithmetic number, because the mean of its divisors is an integer number (20445382238400).

Almost surely, 2^{318742704967681} is an apocalyptic number.

It is an amenable number.

318742704967681 is a deficient number, since it is larger than the sum of its proper divisors (8383410846719).

318742704967681 is a wasteful number, since it uses less digits than its factorization.

318742704967681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367688.

The product of its (nonzero) digits is 682795008, while the sum is 73.

The spelling of 318742704967681 in words is "three hundred eighteen trillion, seven hundred forty-two billion, seven hundred four million, nine hundred sixty-seven thousand, six hundred eighty-one".