316561605601 has 8 divisors (see below), whose sum is σ = 316780097960. Its totient is φ = 316343169792.

The previous prime is 316561605593. The next prime is 316561605629. The reversal of 316561605601 is 106506165613.

It can be written as a sum of positive squares in 4 ways, for example, as 35660545600 + 280901060001 = 188840^2 + 530001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 316561605601 - 2³ = 316561605593 is a prime.

It is a super-2 number, since 2×316561605601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316561605631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20424811 + ... + 20440303.

It is an arithmetic number, because the mean of its divisors is an integer number (39597512245).

Almost surely, 2^316561605601 is an apocalyptic number.

It is an amenable number.

316561605601 is a deficient number, since it is larger than the sum of its proper divisors (218492359).

316561605601 is a wasteful number, since it uses less digits than its factorization.

316561605601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28275.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 316561605601 in words is "three hundred sixteen billion, five hundred sixty-one million, six hundred five thousand, six hundred one".