71243912192 has 44 divisors (see below), whose sum is σ = 142456682676. Its totient is φ = 35612344320.

The previous prime is 71243912189. The next prime is 71243912197. The reversal of 71243912192 is 29121934217.

It can be written as a sum of positive squares in 2 ways, for example, as 47670608896 + 23573303296 = 218336^2 + 153536^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71243912197) 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, 5196098 + ... + 5209790.

It is an arithmetic number, because the mean of its divisors is an integer number (3237651879).

Almost surely, 2^71243912192 is an apocalyptic number.

It is an amenable number.

71243912192 is a deficient number, since it is larger than the sum of its proper divisors (71212770484).

71243912192 is a wasteful number, since it uses less digits than its factorization.

71243912192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18794 (or 18776 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The spelling of 71243912192 in words is "seventy-one billion, two hundred forty-three million, nine hundred twelve thousand, one hundred ninety-two".