22177056018 has 64 divisors (see below), whose sum is σ = 48594672000. Its totient is φ = 6706188288.

The previous prime is 22177055983. The next prime is 22177056047. The reversal of 22177056018 is 81065077122.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 1240608 + ... + 1258356.

It is an arithmetic number, because the mean of its divisors is an integer number (759291750).

Almost surely, 2^22177056018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22177056018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24297336000).

22177056018 is an abundant number, since it is smaller than the sum of its proper divisors (26417615982).

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

22177056018 is a wasteful number, since it uses less digits than its factorization.

22177056018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18043.

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 22177056018 in words is "twenty-two billion, one hundred seventy-seven million, fifty-six thousand, eighteen".