2045226544421 has 4 divisors (see below), whose sum is σ = 2045432539500. Its totient is φ = 2045020549344.

The previous prime is 2045226544369. The next prime is 2045226544457. The reversal of 2045226544421 is 1244456225402.

It is a happy number.

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 1048803340321 + 996423204100 = 1024111^2 + 998210^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045226544421 - 2¹⁸ = 2045226282277 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 (2045226544021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102982646 + ... + 103002503.

It is an arithmetic number, because the mean of its divisors is an integer number (511358134875).

Almost surely, 2^{2045226544421} is an apocalyptic number.

It is an amenable number.

2045226544421 is a deficient number, since it is larger than the sum of its proper divisors (205995079).

2045226544421 is an equidigital number, since it uses as much as digits as its factorization.

2045226544421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205995078.

The product of its (nonzero) digits is 614400, while the sum is 41.

The spelling of 2045226544421 in words is "two trillion, forty-five billion, two hundred twenty-six million, five hundred forty-four thousand, four hundred twenty-one".