26691462559 has 2 divisors, whose sum is σ = 26691462560. Its totient is φ = 26691462558.

The previous prime is 26691462509. The next prime is 26691462571. The reversal of 26691462559 is 95526419662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26691462559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26691462509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13345731279 + 13345731280.

It is an arithmetic number, because the mean of its divisors is an integer number (13345731280).

Almost surely, 2^26691462559 is an apocalyptic number.

26691462559 is a deficient number, since it is larger than the sum of its proper divisors (1).

26691462559 is an equidigital number, since it uses as much as digits as its factorization.

26691462559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 55.

The spelling of 26691462559 in words is "twenty-six billion, six hundred ninety-one million, four hundred sixty-two thousand, five hundred fifty-nine".