26105250163 has 4 divisors (see below), whose sum is σ = 26712349048. Its totient is φ = 25498151280.

The previous prime is 26105250161. The next prime is 26105250173. The reversal of 26105250163 is 36105250162.

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 26105250163 - 2¹ = 26105250161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26105250161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303549378 + ... + 303549463.

It is an arithmetic number, because the mean of its divisors is an integer number (6678087262).

Almost surely, 2^26105250163 is an apocalyptic number.

26105250163 is a deficient number, since it is larger than the sum of its proper divisors (607098885).

26105250163 is an equidigital number, since it uses as much as digits as its factorization.

26105250163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607098884.

The product of its (nonzero) digits is 10800, while the sum is 31.

Subtracting 26105250163 from its reverse (36105250162), we obtain a palindrome (9999999999).

The spelling of 26105250163 in words is "twenty-six billion, one hundred five million, two hundred fifty thousand, one hundred sixty-three".