1105189220545 has 4 divisors (see below), whose sum is σ = 1326227064660. Its totient is φ = 884151376432.

The previous prime is 1105189220537. The next prime is 1105189220563. The reversal of 1105189220545 is 5450229815011.

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 334514170384 + 770675050161 = 578372^2 + 877881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105189220545 - 2³ = 1105189220537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110518922050 + ... + 110518922059.

It is an arithmetic number, because the mean of its divisors is an integer number (331556766165).

Almost surely, 2^{1105189220545} is an apocalyptic number.

It is an amenable number.

1105189220545 is a deficient number, since it is larger than the sum of its proper divisors (221037844115).

1105189220545 is an equidigital number, since it uses as much as digits as its factorization.

1105189220545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221037844114.

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 1105189220545 in words is "one trillion, one hundred five billion, one hundred eighty-nine million, two hundred twenty thousand, five hundred forty-five".