22621372049 has 6 divisors (see below), whose sum is σ = 23374634130. Its totient is φ = 21891649440.

The previous prime is 22621372043. The next prime is 22621372063. The reversal of 22621372049 is 94027312622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19004552449 + 3616819600 = 137857^2 + 60140^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22621372049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22621372043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11768744 + ... + 11770665.

It is an arithmetic number, because the mean of its divisors is an integer number (3895772355).

Almost surely, 2^22621372049 is an apocalyptic number.

It is an amenable number.

22621372049 is a deficient number, since it is larger than the sum of its proper divisors (753262081).

22621372049 is an equidigital number, since it uses as much as digits as its factorization.

22621372049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23539471 (or 23539440 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 22621372049 in words is "twenty-two billion, six hundred twenty-one million, three hundred seventy-two thousand, forty-nine".