22778743682 has 6 divisors (see below), whose sum is σ = 34168435689. Its totient is φ = 11389265120.

The previous prime is 22778743679. The next prime is 22778743697. The reversal of 22778743682 is 28634787722.

It can be written as a sum of positive squares in 2 ways, for example, as 22177464241 + 601279441 = 148921^2 + 24521^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106721.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 160082 + ... + 266802.

Almost surely, 2^22778743682 is an apocalyptic number.

22778743682 is a deficient number, since it is larger than the sum of its proper divisors (11389692007).

22778743682 is an frugal number, since it uses more digits than its factorization.

22778743682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213444 (or 106723 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 56.

The spelling of 22778743682 in words is "twenty-two billion, seven hundred seventy-eight million, seven hundred forty-three thousand, six hundred eighty-two".