71197898827 has 24 divisors (see below), whose sum is σ = 84293612480. Its totient is φ = 59892663600.

The previous prime is 71197898801. The next prime is 71197898831. The reversal of 71197898827 is 72889879117.

It is not a de Polignac number, because 71197898827 - 2²⁷ = 71063681099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71197896827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261249 + ... + 458962.

Almost surely, 2^71197898827 is an apocalyptic number.

71197898827 is a deficient number, since it is larger than the sum of its proper divisors (13095713653).

71197898827 is a wasteful number, since it uses less digits than its factorization.

71197898827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720295 (or 720284 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 67.

The spelling of 71197898827 in words is "seventy-one billion, one hundred ninety-seven million, eight hundred ninety-eight thousand, eight hundred twenty-seven".