26604203543 has 2 divisors, whose sum is σ = 26604203544. Its totient is φ = 26604203542.

The previous prime is 26604203497. The next prime is 26604203551. The reversal of 26604203543 is 34530240662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26604203543 - 2²⁰ = 26603154967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26604200543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13302101771 + 13302101772.

It is an arithmetic number, because the mean of its divisors is an integer number (13302101772).

Almost surely, 2^26604203543 is an apocalyptic number.

26604203543 is a deficient number, since it is larger than the sum of its proper divisors (1).

26604203543 is an equidigital number, since it uses as much as digits as its factorization.

26604203543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 26604203543 in words is "twenty-six billion, six hundred four million, two hundred three thousand, five hundred forty-three".