318644482150217 has 4 divisors (see below), whose sum is σ = 318736389993936. Its totient is φ = 318552574306500.

The previous prime is 318644482150079. The next prime is 318644482150249. The reversal of 318644482150217 is 712051284446813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 318644482150217 - 2¹⁰ = 318644482149193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318644482150277) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45953916659 + ... + 45953923592.

It is an arithmetic number, because the mean of its divisors is an integer number (79684097498484).

Almost surely, 2^{318644482150217} is an apocalyptic number.

It is an amenable number.

318644482150217 is a deficient number, since it is larger than the sum of its proper divisors (91907843719).

318644482150217 is an equidigital number, since it uses as much as digits as its factorization.

318644482150217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91907843718.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 318644482150217 in words is "three hundred eighteen trillion, six hundred forty-four billion, four hundred eighty-two million, one hundred fifty thousand, two hundred seventeen".