13601857128 has 32 divisors (see below), whose sum is σ = 34008724800. Its totient is φ = 4533408128.

The previous prime is 13601857117. The next prime is 13601857187. The reversal of 13601857128 is 82175810631.

It is a Cunningham number, because it is equal to 116627²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 13601857128.

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, 204100 + ... + 262412.

It is an arithmetic number, because the mean of its divisors is an integer number (1062772650).

Almost surely, 2^13601857128 is an apocalyptic number.

It is an amenable number.

13601857128 is an abundant number, since it is smaller than the sum of its proper divisors (20406867672).

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

13601857128 is a wasteful number, since it uses less digits than its factorization.

13601857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68041 (or 68037 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 13601857128 in words is "thirteen billion, six hundred one million, eight hundred fifty-seven thousand, one hundred twenty-eight".