26661115133 has 2 divisors, whose sum is σ = 26661115134. Its totient is φ = 26661115132.

The previous prime is 26661115057. The next prime is 26661115193. The reversal of 26661115133 is 33151116662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26460552889 + 200562244 = 162667^2 + 14162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26661115133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26661115093 and 26661115102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26661115193) 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, 13330557566 + 13330557567.

It is an arithmetic number, because the mean of its divisors is an integer number (13330557567).

Almost surely, 2^26661115133 is an apocalyptic number.

It is an amenable number.

26661115133 is a deficient number, since it is larger than the sum of its proper divisors (1).

26661115133 is an equidigital number, since it uses as much as digits as its factorization.

26661115133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The spelling of 26661115133 in words is "twenty-six billion, six hundred sixty-one million, one hundred fifteen thousand, one hundred thirty-three".