71297317079 has 2 divisors, whose sum is σ = 71297317080. Its totient is φ = 71297317078.

The previous prime is 71297317001. The next prime is 71297317111. The reversal of 71297317079 is 97071379217.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71297317079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71297317079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71297310079) 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, 35648658539 + 35648658540.

It is an arithmetic number, because the mean of its divisors is an integer number (35648658540).

Almost surely, 2^71297317079 is an apocalyptic number.

71297317079 is a deficient number, since it is larger than the sum of its proper divisors (1).

71297317079 is an equidigital number, since it uses as much as digits as its factorization.

71297317079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166886, while the sum is 53.

The spelling of 71297317079 in words is "seventy-one billion, two hundred ninety-seven million, three hundred seventeen thousand, seventy-nine".