71088504680509 has 32 divisors (see below), whose sum is σ = 73829976366080. Its totient is φ = 68376691468800.

The previous prime is 71088504680471. The next prime is 71088504680549. The reversal of 71088504680509 is 90508640588017.

It is not a de Polignac number, because 71088504680509 - 2¹⁹ = 71088504156221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71088504680549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4539198139 + ... + 4539213799.

It is an arithmetic number, because the mean of its divisors is an integer number (2307186761440).

Almost surely, 2^{71088504680509} is an apocalyptic number.

It is an amenable number.

71088504680509 is a deficient number, since it is larger than the sum of its proper divisors (2741471685571).

71088504680509 is a wasteful number, since it uses less digits than its factorization.

71088504680509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17381.

The product of its (nonzero) digits is 19353600, while the sum is 61.

The spelling of 71088504680509 in words is "seventy-one trillion, eighty-eight billion, five hundred four million, six hundred eighty thousand, five hundred nine".