543793026661 has 2 divisors, whose sum is σ = 543793026662. Its totient is φ = 543793026660.

The previous prime is 543793026653. The next prime is 543793026701. The reversal of 543793026661 is 166620397345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334789532100 + 209003494561 = 578610^2 + 457169^2 .

It is a cyclic number.

It is not a de Polignac number, because 543793026661 - 2³ = 543793026653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543793026599 and 543793026608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543793026611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271896513330 + 271896513331.

It is an arithmetic number, because the mean of its divisors is an integer number (271896513331).

Almost surely, 2^543793026661 is an apocalyptic number.

It is an amenable number.

543793026661 is a deficient number, since it is larger than the sum of its proper divisors (1).

543793026661 is an equidigital number, since it uses as much as digits as its factorization.

543793026661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 543793026661 in words is "five hundred forty-three billion, seven hundred ninety-three million, twenty-six thousand, six hundred sixty-one".