22177784968 has 16 divisors (see below), whose sum is σ = 41585232780. Its totient is φ = 11088389568.

The previous prime is 22177784939. The next prime is 22177784971. The reversal of 22177784968 is 86948777122.

It can be written as a sum of positive squares in 2 ways, for example, as 21614292324 + 563492644 = 147018^2 + 23738^2 .

It is a super-2 number, since 2×22177784968² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179530 + ... + 276742.

Almost surely, 2^22177784968 is an apocalyptic number.

It is an amenable number.

22177784968 is a deficient number, since it is larger than the sum of its proper divisors (19407447812).

22177784968 is a wasteful number, since it uses less digits than its factorization.

22177784968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125736 (or 125732 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 61.

The spelling of 22177784968 in words is "twenty-two billion, one hundred seventy-seven million, seven hundred eighty-four thousand, nine hundred sixty-eight".