6546623543 has 2 divisors, whose sum is σ = 6546623544. Its totient is φ = 6546623542.

The previous prime is 6546623521. The next prime is 6546623591. The reversal of 6546623543 is 3453266456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6546623543 - 2⁸ = 6546623287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6546623494 and 6546623503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6546623593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273311771 + 3273311772.

It is an arithmetic number, because the mean of its divisors is an integer number (3273311772).

Almost surely, 2^6546623543 is an apocalyptic number.

6546623543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6546623543 is an equidigital number, since it uses as much as digits as its factorization.

6546623543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 44.

The square root of 6546623543 is about 80911.2077712353. The cubic root of 6546623543 is about 1870.7070774952.

Adding to 6546623543 its reverse (3453266456), we get a palindrome (9999889999).

The spelling of 6546623543 in words is "six billion, five hundred forty-six million, six hundred twenty-three thousand, five hundred forty-three".