128566035444 has 384 divisors, whose sum is σ = 399156387840. Its totient is φ = 31223808000.

The previous prime is 128566035427. The next prime is 128566035581. The reversal of 128566035444 is 444530665821.

128566035444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 128566035393 and 128566035402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 191033892 + ... + 191034564.

It is an arithmetic number, because the mean of its divisors is an integer number (1039469760).

Almost surely, 2^128566035444 is an apocalyptic number.

128566035444 is a gapful number since it is divisible by the number (14) 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 128566035444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199578193920).

128566035444 is an abundant number, since it is smaller than the sum of its proper divisors (270590352396).

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

128566035444 is a wasteful number, since it uses less digits than its factorization.

128566035444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 128566035444 in words is "one hundred twenty-eight billion, five hundred sixty-six million, thirty-five thousand, four hundred forty-four".