622052423521 has 2 divisors, whose sum is σ = 622052423522. Its totient is φ = 622052423520.

The previous prime is 622052423519. The next prime is 622052423557. The reversal of 622052423521 is 125324250226.

622052423521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618393504400 + 3658919121 = 786380^2 + 60489^2 .

It is a cyclic number.

It is not a de Polignac number, because 622052423521 - 2¹ = 622052423519 is a prime.

Together with 622052423519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (622052423021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311026211760 + 311026211761.

It is an arithmetic number, because the mean of its divisors is an integer number (311026211761).

Almost surely, 2^622052423521 is an apocalyptic number.

It is an amenable number.

622052423521 is a deficient number, since it is larger than the sum of its proper divisors (1).

622052423521 is an equidigital number, since it uses as much as digits as its factorization.

622052423521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 622052423521 its reverse (125324250226), we get a palindrome (747376673747).

The spelling of 622052423521 in words is "six hundred twenty-two billion, fifty-two million, four hundred twenty-three thousand, five hundred twenty-one".