81802341816327 has 48 divisors (see below), whose sum is σ = 129389099673600. Its totient is φ = 49389625241280.

The previous prime is 81802341816287. The next prime is 81802341816341. The reversal of 81802341816327 is 72361814320818.

81802341816327 is a `hidden beast` number, since 8 + 1 + 8 + 0 + 234 + 1 + 81 + 6 + 327 = 666.

It is not a de Polignac number, because 81802341816327 - 2⁶ = 81802341816263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81802341816397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30404074 + ... + 32985032.

It is an arithmetic number, because the mean of its divisors is an integer number (2695606243200).

Almost surely, 2^{81802341816327} is an apocalyptic number.

81802341816327 is a deficient number, since it is larger than the sum of its proper divisors (47586757857273).

81802341816327 is a wasteful number, since it uses less digits than its factorization.

81802341816327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582188 (or 2582185 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 81802341816327 in words is "eighty-one trillion, eight hundred two billion, three hundred forty-one million, eight hundred sixteen thousand, three hundred twenty-seven".