26394450259 has 4 divisors (see below), whose sum is σ = 26602280704. Its totient is φ = 26186619816.

The previous prime is 26394450233. The next prime is 26394450281. The reversal of 26394450259 is 95205449362.

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 26394450259 - 2²³ = 26386061651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26394450289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103915032 + ... + 103915285.

It is an arithmetic number, because the mean of its divisors is an integer number (6650570176).

Almost surely, 2^26394450259 is an apocalyptic number.

26394450259 is a deficient number, since it is larger than the sum of its proper divisors (207830445).

26394450259 is a wasteful number, since it uses less digits than its factorization.

26394450259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207830444.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 26394450259 in words is "twenty-six billion, three hundred ninety-four million, four hundred fifty thousand, two hundred fifty-nine".