6543061356441 has 16 divisors (see below), whose sum is σ = 9183309347840. Its totient is φ = 4132430401680.

The previous prime is 6543061356427. The next prime is 6543061356449. The reversal of 6543061356441 is 1446531603456.

It is a happy number.

It is not a de Polignac number, because 6543061356441 - 2¹⁰ = 6543061355417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6543061356449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9964116 + ... + 10600458.

It is an arithmetic number, because the mean of its divisors is an integer number (573956834240).

Almost surely, 2^{6543061356441} is an apocalyptic number.

It is an amenable number.

6543061356441 is a deficient number, since it is larger than the sum of its proper divisors (2640247991399).

6543061356441 is a wasteful number, since it uses less digits than its factorization.

6543061356441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816756.

The product of its (nonzero) digits is 3110400, while the sum is 48.

Adding to 6543061356441 its reverse (1446531603456), we get a palindrome (7989592959897).

The spelling of 6543061356441 in words is "six trillion, five hundred forty-three billion, sixty-one million, three hundred fifty-six thousand, four hundred forty-one".