22781843948 has 24 divisors (see below), whose sum is σ = 40863571392. Its totient is φ = 11108289024.

The previous prime is 22781843947. The next prime is 22781843951. The reversal of 22781843948 is 84934818722.

It is a junction number, because it is equal to n+sod(n) for n = 22781843893 and 22781843902.

It is not an unprimeable number, because it can be changed into a prime (22781843947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166661 + ... + 270812.

It is an arithmetic number, because the mean of its divisors is an integer number (1702648808).

Almost surely, 2^22781843948 is an apocalyptic number.

It is an amenable number.

22781843948 is a deficient number, since it is larger than the sum of its proper divisors (18081727444).

22781843948 is a wasteful number, since it uses less digits than its factorization.

22781843948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437801 (or 437799 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 56.

The spelling of 22781843948 in words is "twenty-two billion, seven hundred eighty-one million, eight hundred forty-three thousand, nine hundred forty-eight".