317599020076661 has 4 divisors (see below), whose sum is σ = 320099799762432. Its totient is φ = 315098240390892.

The previous prime is 317599020076651. The next prime is 317599020076691. The reversal of 317599020076661 is 166670020995713.

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 317599020076661 - 2²⁶ = 317598952967797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 317599020076594 and 317599020076603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317599020076651) 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, 1250389842695 + ... + 1250389842948.

It is an arithmetic number, because the mean of its divisors is an integer number (80024949940608).

Almost surely, 2^{317599020076661} is an apocalyptic number.

It is an amenable number.

317599020076661 is a deficient number, since it is larger than the sum of its proper divisors (2500779685771).

317599020076661 is a wasteful number, since it uses less digits than its factorization.

317599020076661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500779685770.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 317599020076661 in words is "three hundred seventeen trillion, five hundred ninety-nine billion, twenty million, seventy-six thousand, six hundred sixty-one".