71662271207 has 2 divisors, whose sum is σ = 71662271208. Its totient is φ = 71662271206.

The previous prime is 71662271147. The next prime is 71662271231. The reversal of 71662271207 is 70217226617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71662271207 - 2¹⁸ = 71662009063 is a prime.

It is a super-4 number, since 4×71662271207⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71662274207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35831135603 + 35831135604.

It is an arithmetic number, because the mean of its divisors is an integer number (35831135604).

Almost surely, 2^71662271207 is an apocalyptic number.

71662271207 is a deficient number, since it is larger than the sum of its proper divisors (1).

71662271207 is an equidigital number, since it uses as much as digits as its factorization.

71662271207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 71662271207 in words is "seventy-one billion, six hundred sixty-two million, two hundred seventy-one thousand, two hundred seven".