81041467108 has 36 divisors (see below), whose sum is σ = 174681824940. Its totient is φ = 32688993792.

The previous prime is 81041467099. The next prime is 81041467139. The reversal of 81041467108 is 80176414018.

It can be written as a sum of positive squares in 2 ways, for example, as 22975890084 + 58065577024 = 151578^2 + 240968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12157753 + ... + 12164416.

It is an arithmetic number, because the mean of its divisors is an integer number (4852272915).

Almost surely, 2^81041467108 is an apocalyptic number.

It is an amenable number.

81041467108 is an abundant number, since it is smaller than the sum of its proper divisors (93640357832).

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

81041467108 is a wasteful number, since it uses less digits than its factorization.

81041467108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24322204 (or 24322195 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 81041467108 in words is "eighty-one billion, forty-one million, four hundred sixty-seven thousand, one hundred eight".