71566060427 has 2 divisors, whose sum is σ = 71566060428. Its totient is φ = 71566060426.

The previous prime is 71566060393. The next prime is 71566060451. The reversal of 71566060427 is 72406066517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71566060427 is a prime.

It is not a weakly prime, because it can be changed into another prime (71566060477) 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, 35783030213 + 35783030214.

It is an arithmetic number, because the mean of its divisors is an integer number (35783030214).

Almost surely, 2^71566060427 is an apocalyptic number.

71566060427 is a deficient number, since it is larger than the sum of its proper divisors (1).

71566060427 is an equidigital number, since it uses as much as digits as its factorization.

71566060427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 71566060427 in words is "seventy-one billion, five hundred sixty-six million, sixty thousand, four hundred twenty-seven".