164334127091 has 2 divisors, whose sum is σ = 164334127092. Its totient is φ = 164334127090.

The previous prime is 164334127037. The next prime is 164334127109. The reversal of 164334127091 is 190721433461.

Together with next prime (164334127109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164334127091 - 2¹⁰ = 164334126067 is a prime.

It is not a weakly prime, because it can be changed into another prime (164334127031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82167063545 + 82167063546.

It is an arithmetic number, because the mean of its divisors is an integer number (82167063546).

Almost surely, 2^164334127091 is an apocalyptic number.

164334127091 is a deficient number, since it is larger than the sum of its proper divisors (1).

164334127091 is an equidigital number, since it uses as much as digits as its factorization.

164334127091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 164334127091 in words is "one hundred sixty-four billion, three hundred thirty-four million, one hundred twenty-seven thousand, ninety-one".