71708400565 has 16 divisors (see below), whose sum is σ = 86269478400. Its totient is φ = 57220555392.

The previous prime is 71708400563. The next prime is 71708400571. The reversal of 71708400565 is 56500480717.

It is a cyclic number.

It is not a de Polignac number, because 71708400565 - 2¹ = 71708400563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71708400563) 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, 8605321 + ... + 8613649.

It is an arithmetic number, because the mean of its divisors is an integer number (5391842400).

Almost surely, 2^71708400565 is an apocalyptic number.

It is an amenable number.

71708400565 is a deficient number, since it is larger than the sum of its proper divisors (14561077835).

71708400565 is a wasteful number, since it uses less digits than its factorization.

71708400565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12516.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 71708400565 in words is "seventy-one billion, seven hundred eight million, four hundred thousand, five hundred sixty-five".