22554845521 has 8 divisors (see below), whose sum is σ = 24293626560. Its totient is φ = 20816606352.

The previous prime is 22554845507. The next prime is 22554845597. The reversal of 22554845521 is 12554845522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22554845521 - 2⁷ = 22554845393 is a prime.

It is a super-2 number, since 2×22554845521² (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 (22554845501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46861 + ... + 217498.

It is an arithmetic number, because the mean of its divisors is an integer number (3036703320).

Almost surely, 2^22554845521 is an apocalyptic number.

It is an amenable number.

22554845521 is a deficient number, since it is larger than the sum of its proper divisors (1738781039).

22554845521 is a wasteful number, since it uses less digits than its factorization.

22554845521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270935.

The product of its digits is 640000, while the sum is 43.

Subtracting from 22554845521 its reverse (12554845522), we obtain a palindrome (9999999999).

The spelling of 22554845521 in words is "twenty-two billion, five hundred fifty-four million, eight hundred forty-five thousand, five hundred twenty-one".