26486312305 has 4 divisors (see below), whose sum is σ = 31783574772. Its totient is φ = 21189049840.

The previous prime is 26486312287. The next prime is 26486312329. The reversal of 26486312305 is 50321368462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50321368462 = 2 ⋅25160684231.

It can be written as a sum of positive squares in 2 ways, for example, as 14867412624 + 11618899681 = 121932^2 + 107791^2 .

It is not a de Polignac number, because 26486312305 - 2⁹ = 26486311793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648631226 + ... + 2648631235.

It is an arithmetic number, because the mean of its divisors is an integer number (7945893693).

Almost surely, 2^26486312305 is an apocalyptic number.

It is an amenable number.

26486312305 is a deficient number, since it is larger than the sum of its proper divisors (5297262467).

26486312305 is an equidigital number, since it uses as much as digits as its factorization.

26486312305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297262466.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 26486312305 in words is "twenty-six billion, four hundred eighty-six million, three hundred twelve thousand, three hundred five".