161630062317 has 6 divisors (see below), whose sum is σ = 233465645582. Its totient is φ = 107753374872.

The previous prime is 161630062313. The next prime is 161630062357. The reversal of 161630062317 is 713260036161.

161630062317 is a `hidden beast` number, since 1 + 6 + 1 + 630 + 0 + 6 + 2 + 3 + 17 = 666.

It can be written as a sum of positive squares in only one way, i.e., 150869319561 + 10760742756 = 388419^2 + 103734^2 .

It is not a de Polignac number, because 161630062317 - 2² = 161630062313 is a prime.

It is a super-2 number, since 2×161630062317² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161630062313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8979447898 + ... + 8979447915.

Almost surely, 2^161630062317 is an apocalyptic number.

It is an amenable number.

161630062317 is a deficient number, since it is larger than the sum of its proper divisors (71835583265).

161630062317 is a wasteful number, since it uses less digits than its factorization.

161630062317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17958895819 (or 17958895816 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

Adding to 161630062317 its reverse (713260036161), we get a palindrome (874890098478).

The spelling of 161630062317 in words is "one hundred sixty-one billion, six hundred thirty million, sixty-two thousand, three hundred seventeen".