594317923621621 has 2 divisors, whose sum is σ = 594317923621622. Its totient is φ = 594317923621620.

The previous prime is 594317923621619. The next prime is 594317923621657. The reversal of 594317923621621 is 126126329713495.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359576027000100 + 234741896621521 = 18962490^2 + 15321289^2 .

It is a cyclic number.

It is not a de Polignac number, because 594317923621621 - 2¹ = 594317923621619 is a prime.

It is a super-2 number, since 2×594317923621621² (a number of 30 digits) contains 22 as substring.

Together with 594317923621619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 594317923621621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (594017923621621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297158961810810 + 297158961810811.

It is an arithmetic number, because the mean of its divisors is an integer number (297158961810811).

Almost surely, 2^{594317923621621} is an apocalyptic number.

It is an amenable number.

594317923621621 is a deficient number, since it is larger than the sum of its proper divisors (1).

594317923621621 is an equidigital number, since it uses as much as digits as its factorization.

594317923621621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 61.

The spelling of 594317923621621 in words is "five hundred ninety-four trillion, three hundred seventeen billion, nine hundred twenty-three million, six hundred twenty-one thousand, six hundred twenty-one".