81104344 has 8 divisors (see below), whose sum is σ = 152070660. Its totient is φ = 40552168.

The previous prime is 81104249. The next prime is 81104377. The reversal of 81104344 is 44340118.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069014 + ... + 5069029.

Almost surely, 2^81104344 is an apocalyptic number.

It is an amenable number.

81104344 is a deficient number, since it is larger than the sum of its proper divisors (70966316).

81104344 is a wasteful number, since it uses less digits than its factorization.

81104344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138049 (or 10138045 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 81104344 is about 9005.7950232059. The cubic root of 81104344 is about 432.8605816046.

The spelling of 81104344 in words is "eighty-one million, one hundred four thousand, three hundred forty-four".