71563853371 has 2 divisors, whose sum is σ = 71563853372. Its totient is φ = 71563853370.

The previous prime is 71563853359. The next prime is 71563853393. The reversal of 71563853371 is 17335836517.

It is a weak prime.

It is an emirp because it is prime and its reverse (17335836517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71563853371 - 2⁹ = 71563852859 is a prime.

It is not a weakly prime, because it can be changed into another prime (71563853351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35781926685 + 35781926686.

It is an arithmetic number, because the mean of its divisors is an integer number (35781926686).

Almost surely, 2^71563853371 is an apocalyptic number.

71563853371 is a deficient number, since it is larger than the sum of its proper divisors (1).

71563853371 is an equidigital number, since it uses as much as digits as its factorization.

71563853371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 49.

The spelling of 71563853371 in words is "seventy-one billion, five hundred sixty-three million, eight hundred fifty-three thousand, three hundred seventy-one".