71680474873 has 16 divisors (see below), whose sum is σ = 84631819264. Its totient is φ = 59410169280.

The previous prime is 71680474769. The next prime is 71680474883. The reversal of 71680474873 is 37847408617.

It is a de Polignac number, because none of the positive numbers 2^k-71680474873 is a prime.

It is a super-2 number, since 2×71680474873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71680474883) 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, 134911 + ... + 401947.

It is an arithmetic number, because the mean of its divisors is an integer number (5289488704).

Almost surely, 2^71680474873 is an apocalyptic number.

It is an amenable number.

71680474873 is a deficient number, since it is larger than the sum of its proper divisors (12951344391).

71680474873 is a wasteful number, since it uses less digits than its factorization.

71680474873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268312.

The product of its (nonzero) digits is 6322176, while the sum is 55.

The spelling of 71680474873 in words is "seventy-one billion, six hundred eighty million, four hundred seventy-four thousand, eight hundred seventy-three".