17848561128 has 64 divisors (see below), whose sum is σ = 46083816000. Its totient is φ = 5756332032.

The previous prime is 17848561123. The next prime is 17848561153. The reversal of 17848561128 is 82116584871.

It is a super-2 number, since 2×17848561128² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17848561123) 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, 102808 + ... + 215096.

It is an arithmetic number, because the mean of its divisors is an integer number (720059625).

Almost surely, 2^17848561128 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 17848561128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23041908000).

17848561128 is an abundant number, since it is smaller than the sum of its proper divisors (28235254872).

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

17848561128 is a wasteful number, since it uses less digits than its factorization.

17848561128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112514 (or 112510 counting only the distinct ones).

The product of its digits is 860160, while the sum is 51.

The spelling of 17848561128 in words is "seventeen billion, eight hundred forty-eight million, five hundred sixty-one thousand, one hundred twenty-eight".