531505453069 has 2 divisors, whose sum is σ = 531505453070. Its totient is φ = 531505453068.

The previous prime is 531505453013. The next prime is 531505453091. The reversal of 531505453069 is 960354505135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516692128969 + 14813324100 = 718813^2 + 121710^2 .

It is a cyclic number.

It is not a de Polignac number, because 531505453069 - 2¹¹ = 531505451021 is a prime.

It is a super-2 number, since 2×531505453069² (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 (531505553069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265752726534 + 265752726535.

It is an arithmetic number, because the mean of its divisors is an integer number (265752726535).

Almost surely, 2^531505453069 is an apocalyptic number.

It is an amenable number.

531505453069 is a deficient number, since it is larger than the sum of its proper divisors (1).

531505453069 is an equidigital number, since it uses as much as digits as its factorization.

531505453069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215000, while the sum is 46.

The spelling of 531505453069 in words is "five hundred thirty-one billion, five hundred five million, four hundred fifty-three thousand, sixty-nine".