128032240502540 has 48 divisors (see below), whose sum is σ = 293313229483680. Its totient is φ = 46556701255680.

The previous prime is 128032240502531. The next prime is 128032240502549. The reversal of 128032240502540 is 45205042230821.

It is an interprime number because it is at equal distance from previous prime (128032240502531) and next prime (128032240502549).

It is a junction number, because it is equal to n+sod(n) for n = 128032240502494 and 128032240502503.

It is not an unprimeable number, because it can be changed into a prime (128032240502549) 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, 18898946 + ... + 24763574.

It is an arithmetic number, because the mean of its divisors is an integer number (6110692280910).

Almost surely, 2^{128032240502540} is an apocalyptic number.

128032240502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128032240502540 is an abundant number, since it is smaller than the sum of its proper divisors (165280988981140).

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

128032240502540 is a wasteful number, since it uses less digits than its factorization.

128032240502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963882 (or 5963880 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 128032240502540 in words is "one hundred twenty-eight trillion, thirty-two billion, two hundred forty million, five hundred two thousand, five hundred forty".