26689339808 has 12 divisors (see below), whose sum is σ = 52544637810. Its totient is φ = 13344669888.

The previous prime is 26689339799. The next prime is 26689339811. The reversal of 26689339808 is 80893398662.

It can be written as a sum of positive squares in only one way, i.e., 24733223824 + 1956115984 = 157268^2 + 44228^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417020903 + ... + 417020966.

Almost surely, 2^26689339808 is an apocalyptic number.

It is an amenable number.

26689339808 is a deficient number, since it is larger than the sum of its proper divisors (25855298002).

26689339808 is an equidigital number, since it uses as much as digits as its factorization.

26689339808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834041879 (or 834041871 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 26689339808 in words is "twenty-six billion, six hundred eighty-nine million, three hundred thirty-nine thousand, eight hundred eight".