71008140081 has 4 divisors (see below), whose sum is σ = 94677520112. Its totient is φ = 47338760052.

The previous prime is 71008140067. The next prime is 71008140103. The reversal of 71008140081 is 18004180017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71008140081 - 2¹⁸ = 71007877937 is a prime.

It is a super-2 number, since 2×71008140081² (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 (71008140481) 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, 11834690011 + ... + 11834690016.

It is an arithmetic number, because the mean of its divisors is an integer number (23669380028).

Almost surely, 2^71008140081 is an apocalyptic number.

It is an amenable number.

71008140081 is a deficient number, since it is larger than the sum of its proper divisors (23669380031).

71008140081 is a wasteful number, since it uses less digits than its factorization.

71008140081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23669380030.

The product of its (nonzero) digits is 1792, while the sum is 30.

The spelling of 71008140081 in words is "seventy-one billion, eight million, one hundred forty thousand, eighty-one".