66589498543 has 2 divisors, whose sum is σ = 66589498544. Its totient is φ = 66589498542.

The previous prime is 66589498529. The next prime is 66589498601. The reversal of 66589498543 is 34589498566.

66589498543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66589498543 is a prime.

It is a super-2 number, since 2×66589498543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66589498513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33294749271 + 33294749272.

It is an arithmetic number, because the mean of its divisors is an integer number (33294749272).

Almost surely, 2^66589498543 is an apocalyptic number.

66589498543 is a deficient number, since it is larger than the sum of its proper divisors (1).

66589498543 is an equidigital number, since it uses as much as digits as its factorization.

66589498543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 223948800, while the sum is 67.

The spelling of 66589498543 in words is "sixty-six billion, five hundred eighty-nine million, four hundred ninety-eight thousand, five hundred forty-three".