128543563240 has 32 divisors (see below), whose sum is σ = 289244494080. Its totient is φ = 51413607232.

The previous prime is 128543563201. The next prime is 128543563273. The reversal of 128543563240 is 42365345821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460929 + ... + 685231.

It is an arithmetic number, because the mean of its divisors is an integer number (9038890440).

Almost surely, 2^128543563240 is an apocalyptic number.

128543563240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128543563240 is an abundant number, since it is smaller than the sum of its proper divisors (160700930840).

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

128543563240 is a wasteful number, since it uses less digits than its factorization.

128543563240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238641 (or 238637 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 128543563240 in words is "one hundred twenty-eight billion, five hundred forty-three million, five hundred sixty-three thousand, two hundred forty".