26204661559 has 2 divisors, whose sum is σ = 26204661560. Its totient is φ = 26204661558.

The previous prime is 26204661529. The next prime is 26204661607. The reversal of 26204661559 is 95516640262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26204661559 - 2¹¹ = 26204659511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26204661529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13102330779 + 13102330780.

It is an arithmetic number, because the mean of its divisors is an integer number (13102330780).

Almost surely, 2^26204661559 is an apocalyptic number.

26204661559 is a deficient number, since it is larger than the sum of its proper divisors (1).

26204661559 is an equidigital number, since it uses as much as digits as its factorization.

26204661559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 26204661559 in words is "twenty-six billion, two hundred four million, six hundred sixty-one thousand, five hundred fifty-nine".