71587084681 has 16 divisors (see below), whose sum is σ = 86127408000. Its totient is φ = 58125731328.

The previous prime is 71587084661. The next prime is 71587084697. The reversal of 71587084681 is 18648078517.

It is not a de Polignac number, because 71587084681 - 2²⁵ = 71553530249 is a prime.

It is a super-2 number, since 2×71587084681² (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 (71587084631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2458395 + ... + 2487343.

It is an arithmetic number, because the mean of its divisors is an integer number (5382963000).

Almost surely, 2^71587084681 is an apocalyptic number.

It is an amenable number.

71587084681 is a deficient number, since it is larger than the sum of its proper divisors (14540323319).

71587084681 is a wasteful number, since it uses less digits than its factorization.

71587084681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47568.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 71587084681 in words is "seventy-one billion, five hundred eighty-seven million, eighty-four thousand, six hundred eighty-one".