81443438910096 has 80 divisors (see below), whose sum is σ = 211262466729600. Its totient is φ = 27036168577024.

The previous prime is 81443438910047. The next prime is 81443438910131. The reversal of 81443438910096 is 69001983434418.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8710000 + ... + 15451568.

It is an arithmetic number, because the mean of its divisors is an integer number (2640780834120).

Almost surely, 2^{81443438910096} is an apocalyptic number.

It is an amenable number.

81443438910096 is an abundant number, since it is smaller than the sum of its proper divisors (129819027819504).

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

81443438910096 is a wasteful number, since it uses less digits than its factorization.

81443438910096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6742616 (or 6742610 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 81443438910096 in words is "eighty-one trillion, four hundred forty-three billion, four hundred thirty-eight million, nine hundred ten thousand, ninety-six".