26804340243 has 6 divisors (see below), whose sum is σ = 38717380364. Its totient is φ = 17869560156.

The previous prime is 26804340221. The next prime is 26804340253. The reversal of 26804340243 is 34204340862.

It is not a de Polignac number, because 26804340243 - 2⁸ = 26804339987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26804340198 and 26804340207.

It is not an unprimeable number, because it can be changed into a prime (26804340253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1489130005 + ... + 1489130022.

Almost surely, 2^26804340243 is an apocalyptic number.

26804340243 is a deficient number, since it is larger than the sum of its proper divisors (11913040121).

26804340243 is a wasteful number, since it uses less digits than its factorization.

26804340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978260033 (or 2978260030 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 26804340243 in words is "twenty-six billion, eight hundred four million, three hundred forty thousand, two hundred forty-three".