26523432563 has 2 divisors, whose sum is σ = 26523432564. Its totient is φ = 26523432562.

The previous prime is 26523432557. The next prime is 26523432613. The reversal of 26523432563 is 36523432562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26523432563 - 2¹⁸ = 26523170419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26523432563.

It is not a weakly prime, because it can be changed into another prime (26523432503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13261716281 + 13261716282.

It is an arithmetic number, because the mean of its divisors is an integer number (13261716282).

Almost surely, 2^26523432563 is an apocalyptic number.

26523432563 is a deficient number, since it is larger than the sum of its proper divisors (1).

26523432563 is an equidigital number, since it uses as much as digits as its factorization.

26523432563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 41.

Subtracting 26523432563 from its reverse (36523432562), we obtain a palindrome (9999999999).

The spelling of 26523432563 in words is "twenty-six billion, five hundred twenty-three million, four hundred thirty-two thousand, five hundred sixty-three".