1297750549271 has 12 divisors (see below), whose sum is σ = 1429060931256. Its totient is φ = 1177616359920.

The previous prime is 1297750549267. The next prime is 1297750549301. The reversal of 1297750549271 is 1729450577921.

It is not a de Polignac number, because 1297750549271 - 2² = 1297750549267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297750549271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297750749271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9737480 + ... + 9869853.

It is an arithmetic number, because the mean of its divisors is an integer number (119088410938).

Almost surely, 2^{1297750549271} is an apocalyptic number.

1297750549271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1297750549271 is a deficient number, since it is larger than the sum of its proper divisors (131310381985).

1297750549271 is a wasteful number, since it uses less digits than its factorization.

1297750549271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19607902 (or 19607891 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 59.

The spelling of 1297750549271 in words is "one trillion, two hundred ninety-seven billion, seven hundred fifty million, five hundred forty-nine thousand, two hundred seventy-one".