161322888871 has 2 divisors, whose sum is σ = 161322888872. Its totient is φ = 161322888870.

The previous prime is 161322888869. The next prime is 161322888911. The reversal of 161322888871 is 178888223161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161322888871 - 2¹ = 161322888869 is a prime.

It is a super-3 number, since 3×161322888871³ (a number of 35 digits) contains 333 as substring.

Together with 161322888869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161322888841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80661444435 + 80661444436.

It is an arithmetic number, because the mean of its divisors is an integer number (80661444436).

Almost surely, 2^161322888871 is an apocalyptic number.

161322888871 is a deficient number, since it is larger than the sum of its proper divisors (1).

161322888871 is an equidigital number, since it uses as much as digits as its factorization.

161322888871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 55.

The spelling of 161322888871 in words is "one hundred sixty-one billion, three hundred twenty-two million, eight hundred eighty-eight thousand, eight hundred seventy-one".