22177877768 has 16 divisors (see below), whose sum is σ = 42597753660. Its totient is φ = 10818476800.

The previous prime is 22177877723. The next prime is 22177877779. The reversal of 22177877768 is 86777877122.

It can be written as a sum of positive squares in 2 ways, for example, as 17350685284 + 4827192484 = 131722^2 + 69478^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22177877768.

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 3 ways as a sum of consecutive naturals, for example, 33807413 + ... + 33808068.

Almost surely, 2^22177877768 is an apocalyptic number.

It is an amenable number.

22177877768 is a deficient number, since it is larger than the sum of its proper divisors (20419875892).

22177877768 is a wasteful number, since it uses less digits than its factorization.

22177877768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67615528 (or 67615524 counting only the distinct ones).

The product of its digits is 25815552, while the sum is 62.

The spelling of 22177877768 in words is "twenty-two billion, one hundred seventy-seven million, eight hundred seventy-seven thousand, seven hundred sixty-eight".