26198640359 has 4 divisors (see below), whose sum is σ = 26198964600. Its totient is φ = 26198316120.

The previous prime is 26198640323. The next prime is 26198640367. The reversal of 26198640359 is 95304689162.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26198640359 - 2¹² = 26198636263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26198640359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26198640859) 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, 67292 + ... + 238590.

It is an arithmetic number, because the mean of its divisors is an integer number (6549741150).

Almost surely, 2^26198640359 is an apocalyptic number.

26198640359 is a deficient number, since it is larger than the sum of its proper divisors (324241).

26198640359 is a wasteful number, since it uses less digits than its factorization.

26198640359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324240.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 26198640359 in words is "twenty-six billion, one hundred ninety-eight million, six hundred forty thousand, three hundred fifty-nine".