22009537509 has 64 divisors (see below), whose sum is σ = 33126912000. Its totient is φ = 12916620288.

The previous prime is 22009537507. The next prime is 22009537601. The reversal of 22009537509 is 90573590022.

It is not a de Polignac number, because 22009537509 - 2¹ = 22009537507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22009537507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30274104 + ... + 30274830.

It is an arithmetic number, because the mean of its divisors is an integer number (517608000).

Almost surely, 2^22009537509 is an apocalyptic number.

It is an amenable number.

22009537509 is a deficient number, since it is larger than the sum of its proper divisors (11117374491).

22009537509 is a wasteful number, since it uses less digits than its factorization.

22009537509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its (nonzero) digits is 170100, while the sum is 42.

The spelling of 22009537509 in words is "twenty-two billion, nine million, five hundred thirty-seven thousand, five hundred nine".