22149144761 has 4 divisors (see below), whose sum is σ = 22155139572. Its totient is φ = 22143149952.

The previous prime is 22149144757. The next prime is 22149144791. The reversal of 22149144761 is 16744194122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16744194122 = 2 ⋅8372097061.

It can be written as a sum of positive squares in 2 ways, for example, as 2493104761 + 19656040000 = 49931^2 + 140200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22149144761 - 2² = 22149144757 is a prime.

It is a super-3 number, since 3×22149144761³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 2991860 + ... + 2999253.

It is an arithmetic number, because the mean of its divisors is an integer number (5538784893).

Almost surely, 2^22149144761 is an apocalyptic number.

It is an amenable number.

22149144761 is a deficient number, since it is larger than the sum of its proper divisors (5994811).

22149144761 is an equidigital number, since it uses as much as digits as its factorization.

22149144761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994810.

The product of its digits is 96768, while the sum is 41.

The spelling of 22149144761 in words is "twenty-two billion, one hundred forty-nine million, one hundred forty-four thousand, seven hundred sixty-one".