22135446545 has 4 divisors (see below), whose sum is σ = 26562535860. Its totient is φ = 17708357232.

The previous prime is 22135446521. The next prime is 22135446559. The reversal of 22135446545 is 54564453122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54564453122 = 2 ⋅27282226561.

It can be written as a sum of positive squares in 2 ways, for example, as 15457451584 + 6677994961 = 124328^2 + 81719^2 .

It is a cyclic number.

It is not a de Polignac number, because 22135446545 - 2³⁰ = 21061704721 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213544650 + ... + 2213544659.

It is an arithmetic number, because the mean of its divisors is an integer number (6640633965).

Almost surely, 2^22135446545 is an apocalyptic number.

It is an amenable number.

22135446545 is a deficient number, since it is larger than the sum of its proper divisors (4427089315).

22135446545 is an equidigital number, since it uses as much as digits as its factorization.

22135446545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427089314.

The product of its digits is 576000, while the sum is 41.

Adding to 22135446545 its reverse (54564453122), we get a palindrome (76699899667).

The spelling of 22135446545 in words is "twenty-two billion, one hundred thirty-five million, four hundred forty-six thousand, five hundred forty-five".