22149144782 has 4 divisors (see below), whose sum is σ = 33223717176. Its totient is φ = 11074572390.

The previous prime is 22149144757. The next prime is 22149144791. The reversal of 22149144782 is 28744194122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×22149144782² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5537286194 + ... + 5537286197.

It is an arithmetic number, because the mean of its divisors is an integer number (8305929294).

Almost surely, 2^22149144782 is an apocalyptic number.

22149144782 is a deficient number, since it is larger than the sum of its proper divisors (11074572394).

22149144782 is a wasteful number, since it uses less digits than its factorization.

22149144782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11074572393.

The product of its digits is 258048, while the sum is 44.

The spelling of 22149144782 in words is "twenty-two billion, one hundred forty-nine million, one hundred forty-four thousand, seven hundred eighty-two".