505144030093 has 2 divisors, whose sum is σ = 505144030094. Its totient is φ = 505144030092.

The previous prime is 505144030073. The next prime is 505144030159. The reversal of 505144030093 is 390030441505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458521288164 + 46622741929 = 677142^2 + 215923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505144030093 is a prime.

It is a super-2 number, since 2×505144030093² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505144030073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252572015046 + 252572015047.

It is an arithmetic number, because the mean of its divisors is an integer number (252572015047).

Almost surely, 2^505144030093 is an apocalyptic number.

It is an amenable number.

505144030093 is a deficient number, since it is larger than the sum of its proper divisors (1).

505144030093 is an equidigital number, since it uses as much as digits as its factorization.

505144030093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 505144030093 its reverse (390030441505), we get a palindrome (895174471598).

The spelling of 505144030093 in words is "five hundred five billion, one hundred forty-four million, thirty thousand, ninety-three".