2145222433445 has 64 divisors (see below), whose sum is σ = 3211618443264. Its totient is φ = 1339354517760.

The previous prime is 2145222433427. The next prime is 2145222433451. The reversal of 2145222433445 is 5443342225412.

It is not a de Polignac number, because 2145222433445 - 2²⁰ = 2145221384869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 23784704 + ... + 23874726.

It is an arithmetic number, because the mean of its divisors is an integer number (50181538176).

Almost surely, 2^{2145222433445} is an apocalyptic number.

It is an amenable number.

2145222433445 is a deficient number, since it is larger than the sum of its proper divisors (1066396009819).

2145222433445 is a wasteful number, since it uses less digits than its factorization.

2145222433445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90762.

The product of its digits is 921600, while the sum is 41.

Adding to 2145222433445 its reverse (5443342225412), we get a palindrome (7588564658857).

The spelling of 2145222433445 in words is "two trillion, one hundred forty-five billion, two hundred twenty-two million, four hundred thirty-three thousand, four hundred forty-five".