71149839388 has 12 divisors (see below), whose sum is σ = 124514600560. Its totient is φ = 35574239232.

The previous prime is 71149839377. The next prime is 71149839401. The reversal of 71149839388 is 88393894117.

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, 120193 + ... + 395911.

Almost surely, 2^71149839388 is an apocalyptic number.

It is an amenable number.

71149839388 is a deficient number, since it is larger than the sum of its proper divisors (53364761172).

71149839388 is a wasteful number, since it uses less digits than its factorization.

71149839388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340236 (or 340234 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 61.

The spelling of 71149839388 in words is "seventy-one billion, one hundred forty-nine million, eight hundred thirty-nine thousand, three hundred eighty-eight".