26728533856 has 12 divisors (see below), whose sum is σ = 52621801092. Its totient is φ = 13364266912.

The previous prime is 26728533851. The next prime is 26728533857. The reversal of 26728533856 is 65833582762.

It is a junction number, because it is equal to n+sod(n) for n = 26728533797 and 26728533806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26728533851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417633310 + ... + 417633373.

It is an arithmetic number, because the mean of its divisors is an integer number (4385150091).

Almost surely, 2^26728533856 is an apocalyptic number.

It is an amenable number.

26728533856 is a deficient number, since it is larger than the sum of its proper divisors (25893267236).

26728533856 is an equidigital number, since it uses as much as digits as its factorization.

26728533856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835266693 (or 835266685 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 55.

The spelling of 26728533856 in words is "twenty-six billion, seven hundred twenty-eight million, five hundred thirty-three thousand, eight hundred fifty-six".