26116102505 has 4 divisors (see below), whose sum is σ = 31339323012. Its totient is φ = 20892882000.

The previous prime is 26116102487. The next prime is 26116102531. The reversal of 26116102505 is 50520161162.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3690441001 + 22425661504 = 60749^2 + 149752^2 .

It is not a de Polignac number, because 26116102505 - 2²⁸ = 25847667049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2611610246 + ... + 2611610255.

It is an arithmetic number, because the mean of its divisors is an integer number (7834830753).

Almost surely, 2^26116102505 is an apocalyptic number.

It is an amenable number.

26116102505 is a deficient number, since it is larger than the sum of its proper divisors (5223220507).

26116102505 is an equidigital number, since it uses as much as digits as its factorization.

26116102505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223220506.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 26116102505 its reverse (50520161162), we get a palindrome (76636263667).

The spelling of 26116102505 in words is "twenty-six billion, one hundred sixteen million, one hundred two thousand, five hundred five".