2660819543 has 2 divisors, whose sum is σ = 2660819544. Its totient is φ = 2660819542.

The previous prime is 2660819537. The next prime is 2660819569. The reversal of 2660819543 is 3459180662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2660819543 - 2³⁰ = 1587077719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2660819494 and 2660819503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660839543) 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, 1330409771 + 1330409772.

It is an arithmetic number, because the mean of its divisors is an integer number (1330409772).

Almost surely, 2^2660819543 is an apocalyptic number.

2660819543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660819543 is an equidigital number, since it uses as much as digits as its factorization.

2660819543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2660819543 is about 51583.1323496354. The cubic root of 2660819543 is about 1385.7082647300.

The spelling of 2660819543 in words is "two billion, six hundred sixty million, eight hundred nineteen thousand, five hundred forty-three".