318057940661 has 16 divisors (see below), whose sum is σ = 325235040768. Its totient is φ = 310947336000.

The previous prime is 318057940619. The next prime is 318057940699. The reversal of 318057940661 is 166049750813.

It is a cyclic number.

It is not a de Polignac number, because 318057940661 - 2¹⁰ = 318057939637 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318057940561) 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 in 15 ways as a sum of consecutive naturals, for example, 12617276 + ... + 12642458.

It is an arithmetic number, because the mean of its divisors is an integer number (20327190048).

Almost surely, 2^318057940661 is an apocalyptic number.

It is an amenable number.

318057940661 is a deficient number, since it is larger than the sum of its proper divisors (7177100107).

318057940661 is a wasteful number, since it uses less digits than its factorization.

318057940661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26492.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 318057940661 in words is "three hundred eighteen billion, fifty-seven million, nine hundred forty thousand, six hundred sixty-one".