161588881746871 has 2 divisors, whose sum is σ = 161588881746872. Its totient is φ = 161588881746870.

The previous prime is 161588881746821. The next prime is 161588881746907. The reversal of 161588881746871 is 178647188885161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161588881746871 - 2⁴¹ = 159389858491319 is a prime.

It is a super-2 number, since 2×161588881746871² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161588881746791 and 161588881746800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161588881746821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80794440873435 + 80794440873436.

It is an arithmetic number, because the mean of its divisors is an integer number (80794440873436).

Almost surely, 2^{161588881746871} is an apocalyptic number.

161588881746871 is a deficient number, since it is larger than the sum of its proper divisors (1).

161588881746871 is an equidigital number, since it uses as much as digits as its factorization.

161588881746871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1156055040, while the sum is 79.

The spelling of 161588881746871 in words is "one hundred sixty-one trillion, five hundred eighty-eight billion, eight hundred eighty-one million, seven hundred forty-six thousand, eight hundred seventy-one".