81412938176 has 28 divisors (see below), whose sum is σ = 161565896832. Its totient is φ = 40703420928.

The previous prime is 81412938163. The next prime is 81412938193. The reversal of 81412938176 is 67183921418.

It is a happy number.

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, 988436 + ... + 1067628.

Almost surely, 2^81412938176 is an apocalyptic number.

It is an amenable number.

81412938176 is a deficient number, since it is larger than the sum of its proper divisors (80152958656).

81412938176 is a wasteful number, since it uses less digits than its factorization.

81412938176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95268 (or 95258 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The spelling of 81412938176 in words is "eighty-one billion, four hundred twelve million, nine hundred thirty-eight thousand, one hundred seventy-six".