1271326676721 has 8 divisors (see below), whose sum is σ = 1695374741184. Its totient is φ = 847414865040.

The previous prime is 1271326676713. The next prime is 1271326676779. The reversal of 1271326676721 is 1276766231721.

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

It is not a de Polignac number, because 1271326676721 - 2³ = 1271326676713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1271326674721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34041421 + ... + 34078746.

It is an arithmetic number, because the mean of its divisors is an integer number (211921842648).

Almost surely, 2^{1271326676721} is an apocalyptic number.

It is an amenable number.

1271326676721 is a deficient number, since it is larger than the sum of its proper divisors (424048064463).

1271326676721 is an equidigital number, since it uses as much as digits as its factorization.

1271326676721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68126391.

The product of its digits is 1778112, while the sum is 51.

The spelling of 1271326676721 in words is "one trillion, two hundred seventy-one billion, three hundred twenty-six million, six hundred seventy-six thousand, seven hundred twenty-one".