543330535681 has 2 divisors, whose sum is σ = 543330535682. Its totient is φ = 543330535680.

The previous prime is 543330535541. The next prime is 543330535691. The reversal of 543330535681 is 186535033345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541085292225 + 2245243456 = 735585^2 + 47384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543330535681 is a prime.

It is a super-2 number, since 2×543330535681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (543330535691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271665267840 + 271665267841.

It is an arithmetic number, because the mean of its divisors is an integer number (271665267841).

Almost surely, 2^543330535681 is an apocalyptic number.

It is an amenable number.

543330535681 is a deficient number, since it is larger than the sum of its proper divisors (1).

543330535681 is an equidigital number, since it uses as much as digits as its factorization.

543330535681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 543330535681 in words is "five hundred forty-three billion, three hundred thirty million, five hundred thirty-five thousand, six hundred eighty-one".