533504134021 has 2 divisors, whose sum is σ = 533504134022. Its totient is φ = 533504134020.

The previous prime is 533504134019. The next prime is 533504134067. The reversal of 533504134021 is 120431405335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 531129033796 + 2375100225 = 728786^2 + 48735^2 .

It is a cyclic number.

It is not a de Polignac number, because 533504134021 - 2¹ = 533504134019 is a prime.

It is a super-2 number, since 2×533504134021² (a number of 24 digits) contains 22 as substring.

Together with 533504134019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (533504134001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266752067010 + 266752067011.

It is an arithmetic number, because the mean of its divisors is an integer number (266752067011).

Almost surely, 2^533504134021 is an apocalyptic number.

It is an amenable number.

533504134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

533504134021 is an equidigital number, since it uses as much as digits as its factorization.

533504134021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 533504134021 its reverse (120431405335), we get a palindrome (653935539356).

The spelling of 533504134021 in words is "five hundred thirty-three billion, five hundred four million, one hundred thirty-four thousand, twenty-one".