6543156041 has 2 divisors, whose sum is σ = 6543156042. Its totient is φ = 6543156040.

The previous prime is 6543155999. The next prime is 6543156071. The reversal of 6543156041 is 1406513456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4650558025 + 1892598016 = 68195^2 + 43504^2 .

It is a cyclic number.

It is not a de Polignac number, because 6543156041 - 2¹⁴ = 6543139657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6543155992 and 6543156010.

It is not a weakly prime, because it can be changed into another prime (6543156071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271578020 + 3271578021.

It is an arithmetic number, because the mean of its divisors is an integer number (3271578021).

Almost surely, 2^6543156041 is an apocalyptic number.

It is an amenable number.

6543156041 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543156041 is an equidigital number, since it uses as much as digits as its factorization.

6543156041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 6543156041 is about 80889.7771105843. Note that the first 3 decimals coincide. The cubic root of 6543156041 is about 1870.3767379404.

Adding to 6543156041 its reverse (1406513456), we get a palindrome (7949669497).

The spelling of 6543156041 in words is "six billion, five hundred forty-three million, one hundred fifty-six thousand, forty-one".