1271138446344 has 32 divisors (see below), whose sum is σ = 3422295817920. Its totient is φ = 391119521856.

The previous prime is 1271138446343. The next prime is 1271138446397. The reversal of 1271138446344 is 4436448311721.

It is a junction number, because it is equal to n+sod(n) for n = 1271138446293 and 1271138446302.

It is not an unprimeable number, because it can be changed into a prime (1271138446343) 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 7 ways as a sum of consecutive naturals, for example, 2037080532 + ... + 2037081155.

It is an arithmetic number, because the mean of its divisors is an integer number (106946744310).

Almost surely, 2^{1271138446344} is an apocalyptic number.

It is an amenable number.

1271138446344 is an abundant number, since it is smaller than the sum of its proper divisors (2151157371576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271138446344 is a wasteful number, since it uses less digits than its factorization.

1271138446344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074161709 (or 4074161705 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The spelling of 1271138446344 in words is "one trillion, two hundred seventy-one billion, one hundred thirty-eight million, four hundred forty-six thousand, three hundred forty-four".