1271353871065 has 8 divisors (see below), whose sum is σ = 1605920679360. Its totient is φ = 963552407472.

The previous prime is 1271353871017. The next prime is 1271353871071. The reversal of 1271353871065 is 5601783531721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1271353871065 - 2²⁷ = 1271219653337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6691336069 + ... + 6691336258.

It is an arithmetic number, because the mean of its divisors is an integer number (200740084920).

Almost surely, 2^{1271353871065} is an apocalyptic number.

It is an amenable number.

1271353871065 is a deficient number, since it is larger than the sum of its proper divisors (334566808295).

1271353871065 is a wasteful number, since it uses less digits than its factorization.

1271353871065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382672351.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 1271353871065 in words is "one trillion, two hundred seventy-one billion, three hundred fifty-three million, eight hundred seventy-one thousand, sixty-five".