181606311102 has 64 divisors (see below), whose sum is σ = 382508034048. Its totient is φ = 57419040000.

The previous prime is 181606311097. The next prime is 181606311113. The reversal of 181606311102 is 201113606181.

It is a self number, because there is not a number n which added to its sum of digits gives 181606311102.

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, 1693852 + ... + 1797872.

It is an arithmetic number, because the mean of its divisors is an integer number (5976688032).

Almost surely, 2^181606311102 is an apocalyptic number.

181606311102 is an abundant number, since it is smaller than the sum of its proper divisors (200901722946).

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

181606311102 is a wasteful number, since it uses less digits than its factorization.

181606311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104265.

The product of its (nonzero) digits is 1728, while the sum is 30.

Adding to 181606311102 its reverse (201113606181), we get a palindrome (382719917283).

The spelling of 181606311102 in words is "one hundred eighty-one billion, six hundred six million, three hundred eleven thousand, one hundred two".