160917436681 has 2 divisors, whose sum is σ = 160917436682. Its totient is φ = 160917436680.

The previous prime is 160917436663. The next prime is 160917436697. The reversal of 160917436681 is 186634719061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160540455625 + 376981056 = 400675^2 + 19416^2 .

It is a cyclic number.

It is not a de Polignac number, because 160917436681 - 2²⁵ = 160883882249 is a prime.

It is a super-2 number, since 2×160917436681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (160917434681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80458718340 + 80458718341.

It is an arithmetic number, because the mean of its divisors is an integer number (80458718341).

Almost surely, 2^160917436681 is an apocalyptic number.

It is an amenable number.

160917436681 is a deficient number, since it is larger than the sum of its proper divisors (1).

160917436681 is an equidigital number, since it uses as much as digits as its factorization.

160917436681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 160917436681 in words is "one hundred sixty billion, nine hundred seventeen million, four hundred thirty-six thousand, six hundred eighty-one".