26728585853 has 4 divisors (see below), whose sum is σ = 26743940028. Its totient is φ = 26713231680.

The previous prime is 26728585843. The next prime is 26728585909. The reversal of 26728585853 is 35858582762.

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 1499393284 + 25229192569 = 38722^2 + 158837^2 .

It is a cyclic number.

It is not a de Polignac number, because 26728585853 - 2⁶ = 26728585789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26728585792 and 26728585801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26728585843) 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, 7674476 + ... + 7677957.

It is an arithmetic number, because the mean of its divisors is an integer number (6685985007).

Almost surely, 2^26728585853 is an apocalyptic number.

It is an amenable number.

26728585853 is a deficient number, since it is larger than the sum of its proper divisors (15354175).

26728585853 is a wasteful number, since it uses less digits than its factorization.

26728585853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15354174.

The product of its digits is 32256000, while the sum is 59.

The spelling of 26728585853 in words is "twenty-six billion, seven hundred twenty-eight million, five hundred eighty-five thousand, eight hundred fifty-three".