161592510281 has 2 divisors, whose sum is σ = 161592510282. Its totient is φ = 161592510280.

The previous prime is 161592510253. The next prime is 161592510353. The reversal of 161592510281 is 182015295161.

161592510281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92467687225 + 69124823056 = 304085^2 + 262916^2 .

It is a cyclic number.

It is not a de Polignac number, because 161592510281 - 2³⁰ = 160518768457 is a prime.

It is a super-2 number, since 2×161592510281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161592560281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80796255140 + 80796255141.

It is an arithmetic number, because the mean of its divisors is an integer number (80796255141).

Almost surely, 2^161592510281 is an apocalyptic number.

It is an amenable number.

161592510281 is a deficient number, since it is larger than the sum of its proper divisors (1).

161592510281 is an equidigital number, since it uses as much as digits as its factorization.

161592510281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 41.

The spelling of 161592510281 in words is "one hundred sixty-one billion, five hundred ninety-two million, five hundred ten thousand, two hundred eighty-one".