13659601280 has 128 divisors (see below), whose sum is σ = 35299817280. Its totient is φ = 5024489472.

The previous prime is 13659601279. The next prime is 13659601283. The reversal of 13659601280 is 8210695631.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13659601283) 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, 2301677 + ... + 2307603.

Almost surely, 2^13659601280 is an apocalyptic number.

13659601280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13659601280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17649908640).

13659601280 is an abundant number, since it is smaller than the sum of its proper divisors (21640216000).

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

13659601280 is a wasteful number, since it uses less digits than its factorization.

13659601280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236 (or 6224 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 13659601280 in words is "thirteen billion, six hundred fifty-nine million, six hundred one thousand, two hundred eighty".