71806338028 has 12 divisors (see below), whose sum is σ = 126161735112. Its totient is φ = 35760128000.

The previous prime is 71806338017. The next prime is 71806338053. The reversal of 71806338028 is 82083360817.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35759125 + ... + 35761132.

It is an arithmetic number, because the mean of its divisors is an integer number (10513477926).

Almost surely, 2^71806338028 is an apocalyptic number.

It is an amenable number.

71806338028 is a deficient number, since it is larger than the sum of its proper divisors (54355397084).

71806338028 is a wasteful number, since it uses less digits than its factorization.

71806338028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71520512 (or 71520510 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 71806338028 in words is "seventy-one billion, eight hundred six million, three hundred thirty-eight thousand, twenty-eight".