71165056507 has 2 divisors, whose sum is σ = 71165056508. Its totient is φ = 71165056506.

The previous prime is 71165056499. The next prime is 71165056517. The reversal of 71165056507 is 70565056117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71165056507 - 2³ = 71165056499 is a prime.

It is not a weakly prime, because it can be changed into another prime (71165056517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35582528253 + 35582528254.

It is an arithmetic number, because the mean of its divisors is an integer number (35582528254).

Almost surely, 2^71165056507 is an apocalyptic number.

71165056507 is a deficient number, since it is larger than the sum of its proper divisors (1).

71165056507 is an equidigital number, since it uses as much as digits as its factorization.

71165056507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 43.

The spelling of 71165056507 in words is "seventy-one billion, one hundred sixty-five million, fifty-six thousand, five hundred seven".