26328560648 has 64 divisors (see below), whose sum is σ = 54940139520. Its totient is φ = 11746425600.

The previous prime is 26328560647. The next prime is 26328560651. The reversal of 26328560648 is 84606582362.

It is a junction number, because it is equal to n+sod(n) for n = 26328560596 and 26328560605.

It is not an unprimeable number, because it can be changed into a prime (26328560647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3210233 + ... + 3218423.

It is an arithmetic number, because the mean of its divisors is an integer number (858439680).

Almost surely, 2^26328560648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26328560648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27470069760).

26328560648 is an abundant number, since it is smaller than the sum of its proper divisors (28611578872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26328560648 is a wasteful number, since it uses less digits than its factorization.

26328560648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238 (or 9234 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 26328560648 in words is "twenty-six billion, three hundred twenty-eight million, five hundred sixty thousand, six hundred forty-eight".