22045243777 has 4 divisors (see below), whose sum is σ = 22085546416. Its totient is φ = 22004941140.

The previous prime is 22045243771. The next prime is 22045243811. The reversal of 22045243777 is 77734254022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22045243777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22045243771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20150499 + ... + 20151592.

It is an arithmetic number, because the mean of its divisors is an integer number (5521386604).

Almost surely, 2^22045243777 is an apocalyptic number.

It is an amenable number.

22045243777 is a deficient number, since it is larger than the sum of its proper divisors (40302639).

22045243777 is an equidigital number, since it uses as much as digits as its factorization.

22045243777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40302638.

The product of its (nonzero) digits is 658560, while the sum is 43.

Adding to 22045243777 its reverse (77734254022), we get a palindrome (99779497799).

The spelling of 22045243777 in words is "twenty-two billion, forty-five million, two hundred forty-three thousand, seven hundred seventy-seven".