71671538913 has 32 divisors (see below), whose sum is σ = 103727097600. Its totient is φ = 43757936640.

The previous prime is 71671538881. The next prime is 71671538929. The reversal of 71671538913 is 31983517617.

It is not a de Polignac number, because 71671538913 - 2⁵ = 71671538881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71671538963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2726553 + ... + 2752713.

It is an arithmetic number, because the mean of its divisors is an integer number (3241471800).

Almost surely, 2^71671538913 is an apocalyptic number.

It is an amenable number.

71671538913 is a deficient number, since it is larger than the sum of its proper divisors (32055558687).

71671538913 is a wasteful number, since it uses less digits than its factorization.

71671538913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26729.

The product of its digits is 952560, while the sum is 51.

The spelling of 71671538913 in words is "seventy-one billion, six hundred seventy-one million, five hundred thirty-eight thousand, nine hundred thirteen".