26115205611 has 16 divisors (see below), whose sum is σ = 38176646400. Its totient is φ = 15747858720.

The previous prime is 26115205561. The next prime is 26115205619. The reversal of 26115205611 is 11650251162.

It is not a de Polignac number, because 26115205611 - 2²³ = 26106817003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26115205619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981800 + ... + 1994933.

It is an arithmetic number, because the mean of its divisors is an integer number (2386040400).

Almost surely, 2^26115205611 is an apocalyptic number.

26115205611 is a deficient number, since it is larger than the sum of its proper divisors (12061440789).

26115205611 is a wasteful number, since it uses less digits than its factorization.

26115205611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976946.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 26115205611 its reverse (11650251162), we get a palindrome (37765456773).

The spelling of 26115205611 in words is "twenty-six billion, one hundred fifteen million, two hundred five thousand, six hundred eleven".