81141360006 has 64 divisors (see below), whose sum is σ = 191505494016. Its totient is φ = 22428748800.

The previous prime is 81141359977. The next prime is 81141360011. The reversal of 81141360006 is 60006314118.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5775166 + ... + 5789198.

It is an arithmetic number, because the mean of its divisors is an integer number (2992273344).

Almost surely, 2^81141360006 is an apocalyptic number.

81141360006 is an abundant number, since it is smaller than the sum of its proper divisors (110364134010).

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

81141360006 is a wasteful number, since it uses less digits than its factorization.

81141360006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18517.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 81141360006 in words is "eighty-one billion, one hundred forty-one million, three hundred sixty thousand, six".