22381782721 has 8 divisors (see below), whose sum is σ = 23595346944. Its totient is φ = 21198941760.

The previous prime is 22381782713. The next prime is 22381782727. The reversal of 22381782721 is 12728718322.

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

It is a cyclic number.

It is not a de Polignac number, because 22381782721 - 2³ = 22381782713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22381782727) 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 7 ways as a sum of consecutive naturals, for example, 7679320 + ... + 7682233.

It is an arithmetic number, because the mean of its divisors is an integer number (2949418368).

Almost surely, 2^22381782721 is an apocalyptic number.

It is an amenable number.

22381782721 is a deficient number, since it is larger than the sum of its proper divisors (1213564223).

22381782721 is a wasteful number, since it uses less digits than its factorization.

22381782721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361631.

The product of its digits is 150528, while the sum is 43.

The spelling of 22381782721 in words is "twenty-two billion, three hundred eighty-one million, seven hundred eighty-two thousand, seven hundred twenty-one".