71575256611 has 16 divisors (see below), whose sum is σ = 75810477600. Its totient is φ = 67387189248.

The previous prime is 71575256609. The next prime is 71575256629. The reversal of 71575256611 is 11665257517.

It is a cyclic number.

It is not a de Polignac number, because 71575256611 - 2¹ = 71575256609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71575256681) 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 in 15 ways as a sum of consecutive naturals, for example, 14095405 + ... + 14100481.

It is an arithmetic number, because the mean of its divisors is an integer number (4738154850).

Almost surely, 2^71575256611 is an apocalyptic number.

71575256611 is a deficient number, since it is larger than the sum of its proper divisors (4235220989).

71575256611 is a wasteful number, since it uses less digits than its factorization.

71575256611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558.

The product of its digits is 441000, while the sum is 46.

The spelling of 71575256611 in words is "seventy-one billion, five hundred seventy-five million, two hundred fifty-six thousand, six hundred eleven".