450123136551503 has 2 divisors, whose sum is σ = 450123136551504. Its totient is φ = 450123136551502.

The previous prime is 450123136551481. The next prime is 450123136551547. The reversal of 450123136551503 is 305155631321054.

It is an a-pointer prime, because the next prime (450123136551547) can be obtained adding 450123136551503 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 450123136551503 - 2⁴⁴ = 432530950507087 is a prime.

It is a super-2 number, since 2×450123136551503² (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 (450123136551593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225061568275751 + 225061568275752.

It is an arithmetic number, because the mean of its divisors is an integer number (225061568275752).

Almost surely, 2^{450123136551503} is an apocalyptic number.

450123136551503 is a deficient number, since it is larger than the sum of its proper divisors (1).

450123136551503 is an equidigital number, since it uses as much as digits as its factorization.

450123136551503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 44.

Adding to 450123136551503 its reverse (305155631321054), we get a palindrome (755278767872557).

The spelling of 450123136551503 in words is "four hundred fifty trillion, one hundred twenty-three billion, one hundred thirty-six million, five hundred fifty-one thousand, five hundred three".