161170633274081 has 2 divisors, whose sum is σ = 161170633274082. Its totient is φ = 161170633274080.

The previous prime is 161170633274003. The next prime is 161170633274113. The reversal of 161170633274081 is 180472336071161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152109425560225 + 9061207713856 = 12333265^2 + 3010184^2 .

It is a cyclic number.

It is not a de Polignac number, because 161170633274081 - 2²² = 161170629079777 is a prime.

It is a super-2 number, since 2×161170633274081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161170633274681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80585316637040 + 80585316637041.

It is an arithmetic number, because the mean of its divisors is an integer number (80585316637041).

Almost surely, 2^{161170633274081} is an apocalyptic number.

It is an amenable number.

161170633274081 is a deficient number, since it is larger than the sum of its proper divisors (1).

161170633274081 is an equidigital number, since it uses as much as digits as its factorization.

161170633274081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 161170633274081 in words is "one hundred sixty-one trillion, one hundred seventy billion, six hundred thirty-three million, two hundred seventy-four thousand, eighty-one".