13265505648 has 40 divisors (see below), whose sum is σ = 38076915600. Its totient is φ = 4421835072.

The previous prime is 13265505613. The next prime is 13265505653. The reversal of 13265505648 is 84650556231.

13265505648 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 550 + 56 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15353163 + ... + 15354026.

It is an arithmetic number, because the mean of its divisors is an integer number (951922890).

Almost surely, 2^13265505648 is an apocalyptic number.

13265505648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13265505648 is an abundant number, since it is smaller than the sum of its proper divisors (24811409952).

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

13265505648 is a wasteful number, since it uses less digits than its factorization.

13265505648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30707206 (or 30707194 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 13265505648 in words is "thirteen billion, two hundred sixty-five million, five hundred five thousand, six hundred forty-eight".