71581670714 has 8 divisors (see below), whose sum is σ = 107432129748. Its totient is φ = 35770960800.

The previous prime is 71581670711. The next prime is 71581670729. The reversal of 71581670714 is 41707618517.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69731380489 + 1850290225 = 264067^2 + 43015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71581670711) 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, 9932777 + ... + 9939980.

Almost surely, 2^71581670714 is an apocalyptic number.

71581670714 is a deficient number, since it is larger than the sum of its proper divisors (35850459034).

71581670714 is a wasteful number, since it uses less digits than its factorization.

71581670714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19874560.

The product of its (nonzero) digits is 329280, while the sum is 47.

The spelling of 71581670714 in words is "seventy-one billion, five hundred eighty-one million, six hundred seventy thousand, seven hundred fourteen".