71816668825 has 48 divisors (see below), whose sum is σ = 103995129600. Its totient is φ = 48642465600.

The previous prime is 71816668801. The next prime is 71816668831. The reversal of 71816668825 is 52886661817.

It is not a de Polignac number, because 71816668825 - 2¹⁹ = 71816144537 is a prime.

It is a super-2 number, since 2×71816668825² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71816668825.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191794 + ... + 424756.

It is an arithmetic number, because the mean of its divisors is an integer number (2166565200).

Almost surely, 2^71816668825 is an apocalyptic number.

It is an amenable number.

71816668825 is a deficient number, since it is larger than the sum of its proper divisors (32178460775).

71816668825 is a wasteful number, since it uses less digits than its factorization.

71816668825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233062 (or 233057 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The spelling of 71816668825 in words is "seventy-one billion, eight hundred sixteen million, six hundred sixty-eight thousand, eight hundred twenty-five".