71590656017 has 2 divisors, whose sum is σ = 71590656018. Its totient is φ = 71590656016.

The previous prime is 71590655993. The next prime is 71590656101. The reversal of 71590656017 is 71065609517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48381961681 + 23208694336 = 219959^2 + 152344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71590656017 is a prime.

It is not a weakly prime, because it can be changed into another prime (71590656517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35795328008 + 35795328009.

It is an arithmetic number, because the mean of its divisors is an integer number (35795328009).

Almost surely, 2^71590656017 is an apocalyptic number.

It is an amenable number.

71590656017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71590656017 is an equidigital number, since it uses as much as digits as its factorization.

71590656017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 47.

The spelling of 71590656017 in words is "seventy-one billion, five hundred ninety million, six hundred fifty-six thousand, seventeen".