1271337803316 has 480 divisors, whose sum is σ = 4037862850560. Its totient is φ = 342140298624.

The previous prime is 1271337803287. The next prime is 1271337803357. The reversal of 1271337803316 is 6133087331721.

1271337803316 is a `hidden beast` number, since 1 + 271 + 3 + 378 + 0 + 3 + 3 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3319419661 + ... + 3319420043.

It is an arithmetic number, because the mean of its divisors is an integer number (8412214272).

Almost surely, 2^{1271337803316} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271337803316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2018931425280).

1271337803316 is an abundant number, since it is smaller than the sum of its proper divisors (2766525047244).

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

1271337803316 is an equidigital number, since it uses as much as digits as its factorization.

1271337803316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 1271337803316 in words is "one trillion, two hundred seventy-one billion, three hundred thirty-seven million, eight hundred three thousand, three hundred sixteen".