1271271291385 has 8 divisors (see below), whose sum is σ = 1574736051456. Its totient is φ = 984210031920.

The previous prime is 1271271291361. The next prime is 1271271291413. The reversal of 1271271291385 is 5831921721721.

It is a happy number.

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

It is not a de Polignac number, because 1271271291385 - 2¹⁵ = 1271271258617 is a prime.

It is a super-2 number, since 2×1271271291385² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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, 4100874979 + ... + 4100875288.

It is an arithmetic number, because the mean of its divisors is an integer number (196842006432).

Almost surely, 2^{1271271291385} is an apocalyptic number.

It is an amenable number.

1271271291385 is a deficient number, since it is larger than the sum of its proper divisors (303464760071).

1271271291385 is an equidigital number, since it uses as much as digits as its factorization.

1271271291385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201750303.

The product of its digits is 423360, while the sum is 49.

The spelling of 1271271291385 in words is "one trillion, two hundred seventy-one billion, two hundred seventy-one million, two hundred ninety-one thousand, three hundred eighty-five".