22548109561 has 4 divisors (see below), whose sum is σ = 22559290612. Its totient is φ = 22536928512.

The previous prime is 22548109543. The next prime is 22548109589. The reversal of 22548109561 is 16590184522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8035329600 + 14512779961 = 89640^2 + 120469^2 .

It is a cyclic number.

It is not a de Polignac number, because 22548109561 - 2¹³ = 22548101369 is a prime.

It is a super-2 number, since 2×22548109561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22548109361) 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 3 ways as a sum of consecutive naturals, for example, 5587500 + ... + 5591533.

It is an arithmetic number, because the mean of its divisors is an integer number (5639822653).

Almost surely, 2^22548109561 is an apocalyptic number.

It is an amenable number.

22548109561 is a deficient number, since it is larger than the sum of its proper divisors (11181051).

22548109561 is a wasteful number, since it uses less digits than its factorization.

22548109561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11181050.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 22548109561 in words is "twenty-two billion, five hundred forty-eight million, one hundred nine thousand, five hundred sixty-one".