71580838689 has 6 divisors (see below), whose sum is σ = 103394544786. Its totient is φ = 47720559120.

The previous prime is 71580838661. The next prime is 71580838723. The reversal of 71580838689 is 98683808517.

It can be written as a sum of positive squares in only one way, i.e., 67239083025 + 4341755664 = 259305^2 + 65892^2 .

It is not a de Polignac number, because 71580838689 - 2⁹ = 71580838177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71580830689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3976713252 + ... + 3976713269.

It is an arithmetic number, because the mean of its divisors is an integer number (17232424131).

Almost surely, 2^71580838689 is an apocalyptic number.

It is an amenable number.

71580838689 is a deficient number, since it is larger than the sum of its proper divisors (31813706097).

71580838689 is a wasteful number, since it uses less digits than its factorization.

71580838689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7953426527 (or 7953426524 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 71580838689 in words is "seventy-one billion, five hundred eighty million, eight hundred thirty-eight thousand, six hundred eighty-nine".