13571857128 has 32 divisors (see below), whose sum is σ = 34569828000. Its totient is φ = 4438594368.

The previous prime is 13571857127. The next prime is 13571857147. The reversal of 13571857128 is 82175817531.

It is not an unprimeable number, because it can be changed into a prime (13571857127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5333578 + ... + 5336121.

It is an arithmetic number, because the mean of its divisors is an integer number (1080307125).

Almost surely, 2^13571857128 is an apocalyptic number.

It is an amenable number.

13571857128 is an abundant number, since it is smaller than the sum of its proper divisors (20997970872).

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

13571857128 is a wasteful number, since it uses less digits than its factorization.

13571857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10669761 (or 10669757 counting only the distinct ones).

The product of its digits is 470400, while the sum is 48.

The spelling of 13571857128 in words is "thirteen billion, five hundred seventy-one million, eight hundred fifty-seven thousand, one hundred twenty-eight".