71080731712 has 28 divisors (see below), whose sum is σ = 142299078876. Its totient is φ = 35225845760.

The previous prime is 71080731697. The next prime is 71080731713. The reversal of 71080731712 is 21713708017.

It can be written as a sum of positive squares in 2 ways, for example, as 24365961216 + 46714770496 = 156096^2 + 216136^2 .

It is not an unprimeable number, because it can be changed into a prime (71080731713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4907089 + ... + 4921552.

Almost surely, 2^71080731712 is an apocalyptic number.

It is an amenable number.

71080731712 is an abundant number, since it is smaller than the sum of its proper divisors (71218347164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71080731712 is a wasteful number, since it uses less digits than its factorization.

71080731712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828766 (or 9828756 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 37.

The spelling of 71080731712 in words is "seventy-one billion, eighty million, seven hundred thirty-one thousand, seven hundred twelve".