71528282861 has 16 divisors (see below), whose sum is σ = 83187354240. Its totient is φ = 60231833280.

The previous prime is 71528282851. The next prime is 71528282893. The reversal of 71528282861 is 16828282517.

It is a cyclic number.

It is not a de Polignac number, because 71528282861 - 2¹⁰ = 71528281837 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71528282851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252950 + ... + 455016.

It is an arithmetic number, because the mean of its divisors is an integer number (5199209640).

Almost surely, 2^71528282861 is an apocalyptic number.

It is an amenable number.

71528282861 is a deficient number, since it is larger than the sum of its proper divisors (11659071379).

71528282861 is a wasteful number, since it uses less digits than its factorization.

71528282861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202964.

The product of its digits is 860160, while the sum is 50.

The spelling of 71528282861 in words is "seventy-one billion, five hundred twenty-eight million, two hundred eighty-two thousand, eight hundred sixty-one".