315444982081 has 2 divisors, whose sum is σ = 315444982082. Its totient is φ = 315444982080.

The previous prime is 315444982067. The next prime is 315444982169. The reversal of 315444982081 is 180289444513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295048857856 + 20396124225 = 543184^2 + 142815^2 .

It is a cyclic number.

It is not a de Polignac number, because 315444982081 - 2¹¹ = 315444980033 is a prime.

It is a super-2 number, since 2×315444982081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315444982381) 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 as a sum of consecutive naturals, namely, 157722491040 + 157722491041.

It is an arithmetic number, because the mean of its divisors is an integer number (157722491041).

Almost surely, 2^315444982081 is an apocalyptic number.

It is an amenable number.

315444982081 is a deficient number, since it is larger than the sum of its proper divisors (1).

315444982081 is an equidigital number, since it uses as much as digits as its factorization.

315444982081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 315444982081 in words is "three hundred fifteen billion, four hundred forty-four million, nine hundred eighty-two thousand, eighty-one".