22245540445545 has 16 divisors (see below), whose sum is σ = 35593193397120. Its totient is φ = 11864178676224.

The previous prime is 22245540445523. The next prime is 22245540445547. The reversal of 22245540445545 is 54554404554222.

It is not a de Polignac number, because 22245540445545 - 2⁷ = 22245540445417 is a prime.

It is a super-2 number, since 2×22245540445545² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22245540445547) 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 15 ways as a sum of consecutive naturals, for example, 5155624 + ... + 8430393.

It is an arithmetic number, because the mean of its divisors is an integer number (2224574587320).

Almost surely, 2^{22245540445545} is an apocalyptic number.

It is an amenable number.

22245540445545 is a deficient number, since it is larger than the sum of its proper divisors (13347652951575).

22245540445545 is a wasteful number, since it uses less digits than its factorization.

22245540445545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13695184.

The product of its (nonzero) digits is 25600000, while the sum is 51.

Adding to 22245540445545 its reverse (54554404554222), we get a palindrome (76799944999767).

The spelling of 22245540445545 in words is "twenty-two trillion, two hundred forty-five billion, five hundred forty million, four hundred forty-five thousand, five hundred forty-five".