26106121101611 has 4 divisors (see below), whose sum is σ = 27480127475400. Its totient is φ = 24732114727824.

The previous prime is 26106121101589. The next prime is 26106121101647. The reversal of 26106121101611 is 11610112160162.

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 26106121101611 - 2²² = 26106116907307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26106121100611) 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 in 3 ways as a sum of consecutive naturals, for example, 687003186866 + ... + 687003186903.

It is an arithmetic number, because the mean of its divisors is an integer number (6870031868850).

Almost surely, 2^{26106121101611} is an apocalyptic number.

26106121101611 is a deficient number, since it is larger than the sum of its proper divisors (1374006373789).

26106121101611 is a wasteful number, since it uses less digits than its factorization.

26106121101611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374006373788.

The product of its (nonzero) digits is 864, while the sum is 29.

Adding to 26106121101611 its reverse (11610112160162), we get a palindrome (37716233261773).

The spelling of 26106121101611 in words is "twenty-six trillion, one hundred six billion, one hundred twenty-one million, one hundred one thousand, six hundred eleven".