26556334612111 has 4 divisors (see below), whose sum is σ = 26561363273824. Its totient is φ = 26551305950400.

The previous prime is 26556334612039. The next prime is 26556334612117. The reversal of 26556334612111 is 11121643365562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26556334612111 - 2¹⁵ = 26556334579343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26556334612117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514322935 + ... + 2514333496.

It is an arithmetic number, because the mean of its divisors is an integer number (6640340818456).

Almost surely, 2^{26556334612111} is an apocalyptic number.

26556334612111 is a deficient number, since it is larger than the sum of its proper divisors (5028661713).

26556334612111 is an equidigital number, since it uses as much as digits as its factorization.

26556334612111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028661712.

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

Adding to 26556334612111 its reverse (11121643365562), we get a palindrome (37677977977673).

The spelling of 26556334612111 in words is "twenty-six trillion, five hundred fifty-six billion, three hundred thirty-four million, six hundred twelve thousand, one hundred eleven".