22245540445547 has 2 divisors, whose sum is σ = 22245540445548. Its totient is φ = 22245540445546.

The previous prime is 22245540445523. The next prime is 22245540445613. The reversal of 22245540445547 is 74554404554222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22245540445547 - 2²⁴ = 22245523668331 is a prime.

It is not a weakly prime, because it can be changed into another prime (22245540145547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122770222773 + 11122770222774.

It is an arithmetic number, because the mean of its divisors is an integer number (11122770222774).

Almost surely, 2^{22245540445547} is an apocalyptic number.

22245540445547 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245540445547 is an equidigital number, since it uses as much as digits as its factorization.

22245540445547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840000, while the sum is 53.

Adding to 22245540445547 its reverse (74554404554222), we get a palindrome (96799944999769).

The spelling of 22245540445547 in words is "twenty-two trillion, two hundred forty-five billion, five hundred forty million, four hundred forty-five thousand, five hundred forty-seven".