1445306220223 has 4 divisors (see below), whose sum is σ = 1469802935880. Its totient is φ = 1420809504568.

The previous prime is 1445306220203. The next prime is 1445306220247. The reversal of 1445306220223 is 3220226035441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1445306220223 - 2⁵ = 1445306220191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445306220203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12248357740 + ... + 12248357857.

It is an arithmetic number, because the mean of its divisors is an integer number (367450733970).

Almost surely, 2^{1445306220223} is an apocalyptic number.

1445306220223 is a deficient number, since it is larger than the sum of its proper divisors (24496715657).

1445306220223 is an equidigital number, since it uses as much as digits as its factorization.

1445306220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24496715656.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 1445306220223 in words is "one trillion, four hundred forty-five billion, three hundred six million, two hundred twenty thousand, two hundred twenty-three".