1287201577271 has 2 divisors, whose sum is σ = 1287201577272. Its totient is φ = 1287201577270.

The previous prime is 1287201577199. The next prime is 1287201577327. The reversal of 1287201577271 is 1727751027821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287201577271 - 2²⁶ = 1287134468407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287201570271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643600788635 + 643600788636.

It is an arithmetic number, because the mean of its divisors is an integer number (643600788636).

Almost surely, 2^{1287201577271} is an apocalyptic number.

1287201577271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287201577271 is an equidigital number, since it uses as much as digits as its factorization.

1287201577271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768320, while the sum is 50.

The spelling of 1287201577271 in words is "one trillion, two hundred eighty-seven billion, two hundred one million, five hundred seventy-seven thousand, two hundred seventy-one".