622444422541 has 4 divisors (see below), whose sum is σ = 636919874272. Its totient is φ = 607968970812.

The previous prime is 622444422493. The next prime is 622444422559. The reversal of 622444422541 is 145224444226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145224444226 = 2 ⋅72612222113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622444422541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622444422494 and 622444422503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622444422641) 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, 7237725801 + ... + 7237725886.

It is an arithmetic number, because the mean of its divisors is an integer number (159229968568).

Almost surely, 2^622444422541 is an apocalyptic number.

It is an amenable number.

622444422541 is a deficient number, since it is larger than the sum of its proper divisors (14475451731).

622444422541 is a wasteful number, since it uses less digits than its factorization.

622444422541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14475451730.

The product of its digits is 491520, while the sum is 40.

Adding to 622444422541 its reverse (145224444226), we get a palindrome (767668866767).

The spelling of 622444422541 in words is "six hundred twenty-two billion, four hundred forty-four million, four hundred twenty-two thousand, five hundred forty-one".