26503312243 has 2 divisors, whose sum is σ = 26503312244. Its totient is φ = 26503312242.

The previous prime is 26503312189. The next prime is 26503312259. The reversal of 26503312243 is 34221330562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26503312243 - 2²⁹ = 25966441331 is a prime.

It is not a weakly prime, because it can be changed into another prime (26503318243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13251656121 + 13251656122.

It is an arithmetic number, because the mean of its divisors is an integer number (13251656122).

Almost surely, 2^26503312243 is an apocalyptic number.

26503312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26503312243 is an equidigital number, since it uses as much as digits as its factorization.

26503312243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 26503312243 in words is "twenty-six billion, five hundred three million, three hundred twelve thousand, two hundred forty-three".