271445406443257 has 2 divisors, whose sum is σ = 271445406443258. Its totient is φ = 271445406443256.

The previous prime is 271445406443213. The next prime is 271445406443279. The reversal of 271445406443257 is 752344604544172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252317213174016 + 19128193269241 = 15884496^2 + 4373579^2 .

It is a cyclic number.

It is not a de Polignac number, because 271445406443257 - 2¹⁹ = 271445405918969 is a prime.

It is not a weakly prime, because it can be changed into another prime (271445406446257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135722703221628 + 135722703221629.

It is an arithmetic number, because the mean of its divisors is an integer number (135722703221629).

Almost surely, 2^{271445406443257} is an apocalyptic number.

It is an amenable number.

271445406443257 is a deficient number, since it is larger than the sum of its proper divisors (1).

271445406443257 is an equidigital number, since it uses as much as digits as its factorization.

271445406443257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90316800, while the sum is 58.

The spelling of 271445406443257 in words is "two hundred seventy-one trillion, four hundred forty-five billion, four hundred six million, four hundred forty-three thousand, two hundred fifty-seven".