26808806933 has 4 divisors (see below), whose sum is σ = 26849365548. Its totient is φ = 26768248320.

The previous prime is 26808806821. The next prime is 26808806953. The reversal of 26808806933 is 33960880862.

It is a happy number.

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 22481403844 + 4327403089 = 149938^2 + 65783^2 .

It is a cyclic number.

It is not a de Polignac number, because 26808806933 - 2⁸ = 26808806677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26808806953) 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, 20278316 + ... + 20279637.

It is an arithmetic number, because the mean of its divisors is an integer number (6712341387).

Almost surely, 2^26808806933 is an apocalyptic number.

It is an amenable number.

26808806933 is a deficient number, since it is larger than the sum of its proper divisors (40558615).

26808806933 is an equidigital number, since it uses as much as digits as its factorization.

26808806933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40558614.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 26808806933 in words is "twenty-six billion, eight hundred eight million, eight hundred six thousand, nine hundred thirty-three".