2224426721638 has 32 divisors (see below), whose sum is σ = 3757547768832. Its totient is φ = 978445591200.

The previous prime is 2224426721623. The next prime is 2224426721639. The reversal of 2224426721638 is 8361276244222.

It is a junction number, because it is equal to n+sod(n) for n = 2224426721591 and 2224426721600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224426721639) 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 15 ways as a sum of consecutive naturals, for example, 20742745 + ... + 20849707.

It is an arithmetic number, because the mean of its divisors is an integer number (117423367776).

Almost surely, 2^{2224426721638} is an apocalyptic number.

2224426721638 is a deficient number, since it is larger than the sum of its proper divisors (1533121047194).

2224426721638 is a wasteful number, since it uses less digits than its factorization.

2224426721638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137500.

The product of its digits is 3096576, while the sum is 49.

The spelling of 2224426721638 in words is "two trillion, two hundred twenty-four billion, four hundred twenty-six million, seven hundred twenty-one thousand, six hundred thirty-eight".