22772922649 has 3 divisors (see below), whose sum is σ = 22773073557. Its totient is φ = 22772771742.

The previous prime is 22772922631. The next prime is 22772922677. The reversal of 22772922649 is 94622927722.

The square root of 22772922649 is 150907.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94622927722 = 2 ⋅47311463861.

It is not a de Polignac number, because 22772922649 - 2⁷ = 22772922521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22772922596 and 22772922605.

It is not an unprimeable number, because it can be changed into a prime (22772922049) 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 2 ways as a sum of consecutive naturals, for example, 75454 + ... + 226360.

It is an arithmetic number, because the mean of its divisors is an integer number (7591024519).

Almost surely, 2^22772922649 is an apocalyptic number.

22772922649 is the 150907-th square number.

22772922649 is the 75454-th centered octagonal number.

It is an amenable number.

22772922649 is a deficient number, since it is larger than the sum of its proper divisors (150908).

22772922649 is an frugal number, since it uses more digits than its factorization.

22772922649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301814 (or 150907 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The spelling of 22772922649 in words is "twenty-two billion, seven hundred seventy-two million, nine hundred twenty-two thousand, six hundred forty-nine".