22149144781 has 8 divisors (see below), whose sum is σ = 22277592000. Its totient is φ = 22020750240.

The previous prime is 22149144757. The next prime is 22149144791. The reversal of 22149144781 is 18744194122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22149144781 is a prime.

It is a super-2 number, since 2×22149144781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149144751) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1099641 + ... + 1119601.

It is an arithmetic number, because the mean of its divisors is an integer number (2784699000).

Almost surely, 2^22149144781 is an apocalyptic number.

It is an amenable number.

22149144781 is a deficient number, since it is larger than the sum of its proper divisors (128447219).

22149144781 is a wasteful number, since it uses less digits than its factorization.

22149144781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26339.

The product of its digits is 129024, while the sum is 43.

The spelling of 22149144781 in words is "twenty-two billion, one hundred forty-nine million, one hundred forty-four thousand, seven hundred eighty-one".