71311245155263 has 2 divisors, whose sum is σ = 71311245155264. Its totient is φ = 71311245155262.

The previous prime is 71311245155221. The next prime is 71311245155273. The reversal of 71311245155263 is 36255154211317.

It is a strong prime.

It is an emirp because it is prime and its reverse (36255154211317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71311245155263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71311245155273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655622577631 + 35655622577632.

It is an arithmetic number, because the mean of its divisors is an integer number (35655622577632).

Almost surely, 2^{71311245155263} is an apocalyptic number.

71311245155263 is a deficient number, since it is larger than the sum of its proper divisors (1).

71311245155263 is an equidigital number, since it uses as much as digits as its factorization.

71311245155263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 46.

The spelling of 71311245155263 in words is "seventy-one trillion, three hundred eleven billion, two hundred forty-five million, one hundred fifty-five thousand, two hundred sixty-three".