317153386661 has 4 divisors (see below), whose sum is σ = 325725099852. Its totient is φ = 308581673472.

The previous prime is 317153386621. The next prime is 317153386687. The reversal of 317153386661 is 166683351713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166683351713 = 1439 ⋅115832767.

It can be written as a sum of positive squares in 2 ways, for example, as 118521832900 + 198631553761 = 344270^2 + 445681^2 .

It is a cyclic number.

It is not a de Polignac number, because 317153386661 - 2²² = 317149192357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317153386621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4285856540 + ... + 4285856613.

It is an arithmetic number, because the mean of its divisors is an integer number (81431274963).

Almost surely, 2^317153386661 is an apocalyptic number.

It is an amenable number.

317153386661 is a deficient number, since it is larger than the sum of its proper divisors (8571713191).

317153386661 is an equidigital number, since it uses as much as digits as its factorization.

317153386661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571713190.

The product of its digits is 1632960, while the sum is 50.

The spelling of 317153386661 in words is "three hundred seventeen billion, one hundred fifty-three million, three hundred eighty-six thousand, six hundred sixty-one".