450123504244621 has 2 divisors, whose sum is σ = 450123504244622. Its totient is φ = 450123504244620.

The previous prime is 450123504244523. The next prime is 450123504244639. The reversal of 450123504244621 is 126442405321054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449747919122121 + 375585122500 = 21207261^2 + 612850^2 .

It is a cyclic number.

It is not a de Polignac number, because 450123504244621 - 2³⁹ = 449573748430733 is a prime.

It is a super-2 number, since 2×450123504244621² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450123504244651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225061752122310 + 225061752122311.

It is an arithmetic number, because the mean of its divisors is an integer number (225061752122311).

Almost surely, 2^{450123504244621} is an apocalyptic number.

It is an amenable number.

450123504244621 is a deficient number, since it is larger than the sum of its proper divisors (1).

450123504244621 is an equidigital number, since it uses as much as digits as its factorization.

450123504244621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 43.

Adding to 450123504244621 its reverse (126442405321054), we get a palindrome (576565909565675).

The spelling of 450123504244621 in words is "four hundred fifty trillion, one hundred twenty-three billion, five hundred four million, two hundred forty-four thousand, six hundred twenty-one".