26487506533 has 2 divisors, whose sum is σ = 26487506534. Its totient is φ = 26487506532.

The previous prime is 26487506531. The next prime is 26487506587. The reversal of 26487506533 is 33560578462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26348431684 + 139074849 = 162322^2 + 11793^2 .

It is a cyclic number.

It is not a de Polignac number, because 26487506533 - 2¹ = 26487506531 is a prime.

Together with 26487506531, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26487506531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13243753266 + 13243753267.

It is an arithmetic number, because the mean of its divisors is an integer number (13243753267).

Almost surely, 2^26487506533 is an apocalyptic number.

It is an amenable number.

26487506533 is a deficient number, since it is larger than the sum of its proper divisors (1).

26487506533 is an equidigital number, since it uses as much as digits as its factorization.

26487506533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 26487506533 in words is "twenty-six billion, four hundred eighty-seven million, five hundred six thousand, five hundred thirty-three".