22044500544509 has 2 divisors, whose sum is σ = 22044500544510. Its totient is φ = 22044500544508.

The previous prime is 22044500544503. The next prime is 22044500544553. The reversal of 22044500544509 is 90544500544022.

It is an a-pointer prime, because the next prime (22044500544553) can be obtained adding 22044500544509 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19886275116409 + 2158225428100 = 4459403^2 + 1469090^2 .

It is a cyclic number.

It is not a de Polignac number, because 22044500544509 - 2³² = 22040205577213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22044500544509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22044500544503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11022250272254 + 11022250272255.

It is an arithmetic number, because the mean of its divisors is an integer number (11022250272255).

Almost surely, 2^{22044500544509} is an apocalyptic number.

It is an amenable number.

22044500544509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22044500544509 is an equidigital number, since it uses as much as digits as its factorization.

22044500544509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 22044500544509 in words is "twenty-two trillion, forty-four billion, five hundred million, five hundred forty-four thousand, five hundred nine".