26803543385 has 4 divisors (see below), whose sum is σ = 32164252068. Its totient is φ = 21442834704.

The previous prime is 26803543381. The next prime is 26803543399. The reversal of 26803543385 is 58334530862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9733598281 + 17069945104 = 98659^2 + 130652^2 .

It is a cyclic number.

It is not a de Polignac number, because 26803543385 - 2² = 26803543381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26803543381) 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, 2680354334 + ... + 2680354343.

It is an arithmetic number, because the mean of its divisors is an integer number (8041063017).

Almost surely, 2^26803543385 is an apocalyptic number.

It is an amenable number.

26803543385 is a deficient number, since it is larger than the sum of its proper divisors (5360708683).

26803543385 is an equidigital number, since it uses as much as digits as its factorization.

26803543385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360708682.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 26803543385 in words is "twenty-six billion, eight hundred three million, five hundred forty-three thousand, three hundred eighty-five".