181041665046 has 64 divisors (see below), whose sum is σ = 402803331840. Its totient is φ = 53787893760.

The previous prime is 181041665039. The next prime is 181041665059. The reversal of 181041665046 is 640566140181.

It is a junction number, because it is equal to n+sod(n) for n = 181041664989 and 181041665007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 552870 + ... + 817158.

It is an arithmetic number, because the mean of its divisors is an integer number (6293802060).

Almost surely, 2^181041665046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181041665046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201401665920).

181041665046 is an abundant number, since it is smaller than the sum of its proper divisors (221761666794).

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

181041665046 is a wasteful number, since it uses less digits than its factorization.

181041665046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264509.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 181041665046 in words is "one hundred eighty-one billion, forty-one million, six hundred sixty-five thousand, forty-six".