71133821938 has 8 divisors (see below), whose sum is σ = 106802259120. Its totient is φ = 35533068900.

The previous prime is 71133821929. The next prime is 71133821953. The reversal of 71133821938 is 83912833117.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 16918408 + ... + 16922611.

It is an arithmetic number, because the mean of its divisors is an integer number (13350282390).

Almost surely, 2^71133821938 is an apocalyptic number.

71133821938 is a deficient number, since it is larger than the sum of its proper divisors (35668437182).

71133821938 is a wasteful number, since it uses less digits than its factorization.

71133821938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33842072.

The product of its digits is 217728, while the sum is 46.

The spelling of 71133821938 in words is "seventy-one billion, one hundred thirty-three million, eight hundred twenty-one thousand, nine hundred thirty-eight".