1271433165171 has 16 divisors (see below), whose sum is σ = 1921734339840. Its totient is φ = 741240387360.

The previous prime is 1271433165169. The next prime is 1271433165181. The reversal of 1271433165171 is 1715613341721.

It is not a de Polignac number, because 1271433165171 - 2¹ = 1271433165169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271433165131) 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 in 15 ways as a sum of consecutive naturals, for example, 857916375 + ... + 857917856.

It is an arithmetic number, because the mean of its divisors is an integer number (120108396240).

Almost surely, 2^{1271433165171} is an apocalyptic number.

1271433165171 is a deficient number, since it is larger than the sum of its proper divisors (650301174669).

1271433165171 is a wasteful number, since it uses less digits than its factorization.

1271433165171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715834266.

The product of its digits is 105840, while the sum is 42.

The spelling of 1271433165171 in words is "one trillion, two hundred seventy-one billion, four hundred thirty-three million, one hundred sixty-five thousand, one hundred seventy-one".