71660086207 has 2 divisors, whose sum is σ = 71660086208. Its totient is φ = 71660086206.

The previous prime is 71660086193. The next prime is 71660086249. The reversal of 71660086207 is 70268006617.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71660086207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71660086307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35830043103 + 35830043104.

It is an arithmetic number, because the mean of its divisors is an integer number (35830043104).

Almost surely, 2^71660086207 is an apocalyptic number.

71660086207 is a deficient number, since it is larger than the sum of its proper divisors (1).

71660086207 is an equidigital number, since it uses as much as digits as its factorization.

71660086207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 71660086207 in words is "seventy-one billion, six hundred sixty million, eighty-six thousand, two hundred seven".