543019000021 has 2 divisors, whose sum is σ = 543019000022. Its totient is φ = 543019000020.

The previous prime is 543019000009. The next prime is 543019000033. The reversal of 543019000021 is 120000910345.

It is a balanced prime because it is at equal distance from previous prime (543019000009) and next prime (543019000033).

It can be written as a sum of positive squares in only one way, i.e., 501425436996 + 41593563025 = 708114^2 + 203945^2 .

It is a cyclic number.

It is not a de Polignac number, because 543019000021 - 2⁷ = 543018999893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 543019000021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543019000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271509500010 + 271509500011.

It is an arithmetic number, because the mean of its divisors is an integer number (271509500011).

Almost surely, 2^543019000021 is an apocalyptic number.

It is an amenable number.

543019000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

543019000021 is an equidigital number, since it uses as much as digits as its factorization.

543019000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 543019000021 its reverse (120000910345), we get a palindrome (663019910366).

The spelling of 543019000021 in words is "five hundred forty-three billion, nineteen million, twenty-one", and thus it is an aban number.