71429247912 has 64 divisors (see below), whose sum is σ = 195270068160. Its totient is φ = 21593779200.

The previous prime is 71429247889. The next prime is 71429247941. The reversal of 71429247912 is 21974292417.

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, 210193 + ... + 432480.

It is an arithmetic number, because the mean of its divisors is an integer number (3051094815).

Almost surely, 2^71429247912 is an apocalyptic number.

It is an amenable number.

71429247912 is an abundant number, since it is smaller than the sum of its proper divisors (123840820248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71429247912 is a wasteful number, since it uses less digits than its factorization.

71429247912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643114 (or 643110 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The spelling of 71429247912 in words is "seventy-one billion, four hundred twenty-nine million, two hundred forty-seven thousand, nine hundred twelve".