71129110012 has 6 divisors (see below), whose sum is σ = 124475942528. Its totient is φ = 35564555004.

The previous prime is 71129109983. The next prime is 71129110027. The reversal of 71129110012 is 21001192117.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8891138748 + ... + 8891138755.

Almost surely, 2^71129110012 is an apocalyptic number.

It is an amenable number.

71129110012 is a deficient number, since it is larger than the sum of its proper divisors (53346832516).

71129110012 is a wasteful number, since it uses less digits than its factorization.

71129110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782277507 (or 17782277505 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 71129110012 in words is "seventy-one billion, one hundred twenty-nine million, one hundred ten thousand, twelve".