71566338068 has 48 divisors (see below), whose sum is σ = 140491653120. Its totient is φ = 31735988064.

The previous prime is 71566338023. The next prime is 71566338083. The reversal of 71566338068 is 86083366517.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353396 + ... + 517707.

It is an arithmetic number, because the mean of its divisors is an integer number (2926909440).

Almost surely, 2^71566338068 is an apocalyptic number.

It is an amenable number.

71566338068 is a deficient number, since it is larger than the sum of its proper divisors (68925315052).

71566338068 is a wasteful number, since it uses less digits than its factorization.

71566338068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871196 (or 871194 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 71566338068 in words is "seventy-one billion, five hundred sixty-six million, three hundred thirty-eight thousand, sixty-eight".