2243604063421 has 24 divisors (see below), whose sum is σ = 2765879534520. Its totient is φ = 1808362386432.

The previous prime is 2243604063409. The next prime is 2243604063431. The reversal of 2243604063421 is 1243604063422.

It can be written as a sum of positive squares in 4 ways, for example, as 548436519225 + 1695167544196 = 740565^2 + 1301986^2 .

It is not a de Polignac number, because 2243604063421 - 2¹¹ = 2243604061373 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 (2243604063431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252370 + ... + 2133283.

It is an arithmetic number, because the mean of its divisors is an integer number (115244980605).

Almost surely, 2^{2243604063421} is an apocalyptic number.

It is an amenable number.

2243604063421 is a deficient number, since it is larger than the sum of its proper divisors (522275471099).

2243604063421 is a wasteful number, since it uses less digits than its factorization.

2243604063421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386813 (or 2386806 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

Subtracting from 2243604063421 its reverse (1243604063422), we obtain a palindrome (999999999999).

The spelling of 2243604063421 in words is "two trillion, two hundred forty-three billion, six hundred four million, sixty-three thousand, four hundred twenty-one".