318762994006081 has 2 divisors, whose sum is σ = 318762994006082. Its totient is φ = 318762994006080.

The previous prime is 318762994006003. The next prime is 318762994006087. The reversal of 318762994006081 is 180600499267813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261106171088400 + 57656822917681 = 16158780^2 + 7593209^2 .

It is an emirp because it is prime and its reverse (180600499267813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318762994006081 - 2⁹ = 318762994005569 is a prime.

It is a super-2 number, since 2×318762994006081² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318762994006087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159381497003040 + 159381497003041.

It is an arithmetic number, because the mean of its divisors is an integer number (159381497003041).

Almost surely, 2^{318762994006081} is an apocalyptic number.

It is an amenable number.

318762994006081 is a deficient number, since it is larger than the sum of its proper divisors (1).

318762994006081 is an equidigital number, since it uses as much as digits as its factorization.

318762994006081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 318762994006081 in words is "three hundred eighteen trillion, seven hundred sixty-two billion, nine hundred ninety-four million, six thousand, eighty-one".