18911166341022 has 128 divisors (see below), whose sum is σ = 42973352755200. Its totient is φ = 6163054840800.

The previous prime is 18911166341021. The next prime is 18911166341059. The reversal of 18911166341022 is 22014366111981.

18911166341022 is a `hidden beast` number, since 1 + 8 + 9 + 1 + 1 + 1 + 6 + 634 + 1 + 0 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18911166341021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1219202247 + ... + 1219217757.

It is an arithmetic number, because the mean of its divisors is an integer number (335729318400).

Almost surely, 2^{18911166341022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18911166341022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21486676377600).

18911166341022 is an abundant number, since it is smaller than the sum of its proper divisors (24062186414178).

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

18911166341022 is a wasteful number, since it uses less digits than its factorization.

18911166341022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18379 (or 18373 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 18911166341022 in words is "eighteen trillion, nine hundred eleven billion, one hundred sixty-six million, three hundred forty-one thousand, twenty-two".