13505261308 has 96 divisors (see below), whose sum is σ = 29957630976. Its totient is φ = 5174400000.

The previous prime is 13505261299. The next prime is 13505261309. The reversal of 13505261308 is 80316250531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505261309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15329028 + ... + 15329908.

It is an arithmetic number, because the mean of its divisors is an integer number (312058656).

Almost surely, 2^13505261308 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 13505261308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14978815488).

13505261308 is an abundant number, since it is smaller than the sum of its proper divisors (16452369668).

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

13505261308 is a wasteful number, since it uses less digits than its factorization.

13505261308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 13505261308 in words is "thirteen billion, five hundred five million, two hundred sixty-one thousand, three hundred eight".