71239191792 has 20 divisors (see below), whose sum is σ = 184034578920. Its totient is φ = 23746397248.

The previous prime is 71239191761. The next prime is 71239191799. The reversal of 71239191792 is 29719193217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71239191799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742074867 + ... + 742074962.

It is an arithmetic number, because the mean of its divisors is an integer number (9201728946).

Almost surely, 2^71239191792 is an apocalyptic number.

It is an amenable number.

71239191792 is an abundant number, since it is smaller than the sum of its proper divisors (112795387128).

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

71239191792 is a wasteful number, since it uses less digits than its factorization.

71239191792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484149840 (or 1484149834 counting only the distinct ones).

The product of its digits is 428652, while the sum is 51.

The spelling of 71239191792 in words is "seventy-one billion, two hundred thirty-nine million, one hundred ninety-one thousand, seven hundred ninety-two".