22338147778 has 8 divisors (see below), whose sum is σ = 33521918220. Its totient is φ = 11164175040.

The previous prime is 22338147773. The next prime is 22338147809. The reversal of 22338147778 is 87774183322.

It can be written as a sum of positive squares in 2 ways, for example, as 21569915689 + 768232089 = 146867^2 + 27717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22338147773) by changing a digit.

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, 2443723 + ... + 2452846.

Almost surely, 2^22338147778 is an apocalyptic number.

22338147778 is a deficient number, since it is larger than the sum of its proper divisors (11183770442).

22338147778 is a wasteful number, since it uses less digits than its factorization.

22338147778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898852.

The product of its digits is 3161088, while the sum is 52.

The spelling of 22338147778 in words is "twenty-two billion, three hundred thirty-eight million, one hundred forty-seven thousand, seven hundred seventy-eight".