167997449838737 has 2 divisors, whose sum is σ = 167997449838738. Its totient is φ = 167997449838736.

The previous prime is 167997449838709. The next prime is 167997449838787. The reversal of 167997449838737 is 737838944799761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109296967521361 + 58700482317376 = 10454519^2 + 7661624^2 .

It is a cyclic number.

It is not a de Polignac number, because 167997449838737 - 2⁴⁰ = 166897938210961 is a prime.

It is not a weakly prime, because it can be changed into another prime (167997449838787) 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, 83998724919368 + 83998724919369.

It is an arithmetic number, because the mean of its divisors is an integer number (83998724919369).

Almost surely, 2^{167997449838737} is an apocalyptic number.

It is an amenable number.

167997449838737 is a deficient number, since it is larger than the sum of its proper divisors (1).

167997449838737 is an equidigital number, since it uses as much as digits as its factorization.

167997449838737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96786192384, while the sum is 92.

The spelling of 167997449838737 in words is "one hundred sixty-seven trillion, nine hundred ninety-seven billion, four hundred forty-nine million, eight hundred thirty-eight thousand, seven hundred thirty-seven".