71158929812 has 12 divisors (see below), whose sum is σ = 125049167040. Its totient is φ = 35430596376.

The previous prime is 71158929797. The next prime is 71158929857. The reversal of 71158929812 is 21892985117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37216058 + ... + 37217969.

It is an arithmetic number, because the mean of its divisors is an integer number (10420763920).

Almost surely, 2^71158929812 is an apocalyptic number.

It is an amenable number.

71158929812 is a deficient number, since it is larger than the sum of its proper divisors (53890237228).

71158929812 is a wasteful number, since it uses less digits than its factorization.

71158929812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74434270 (or 74434268 counting only the distinct ones).

The product of its digits is 725760, while the sum is 53.

The spelling of 71158929812 in words is "seventy-one billion, one hundred fifty-eight million, nine hundred twenty-nine thousand, eight hundred twelve".