81043160 has 32 divisors (see below), whose sum is σ = 198925200. Its totient is φ = 29470080.

The previous prime is 81043141. The next prime is 81043211. The reversal of 81043160 is 6134018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91655 + ... + 92534.

Almost surely, 2^81043160 is an apocalyptic number.

It is an amenable number.

81043160 is an abundant number, since it is smaller than the sum of its proper divisors (117882040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81043160 is a wasteful number, since it uses less digits than its factorization.

81043160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184211 (or 184207 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 81043160 is about 9002.3974584552. The cubic root of 81043160 is about 432.7517062018.

Adding to 81043160 its reverse (6134018), we get a palindrome (87177178).

The spelling of 81043160 in words is "eighty-one million, forty-three thousand, one hundred sixty".