128617486120 has 32 divisors (see below), whose sum is σ = 289414141920. Its totient is φ = 51442585920.

The previous prime is 128617486117. The next prime is 128617486139. The reversal of 128617486120 is 21684716821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356779 + ... + 620101.

It is an arithmetic number, because the mean of its divisors is an integer number (9044191935).

Almost surely, 2^128617486120 is an apocalyptic number.

128617486120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128617486120 is an abundant number, since it is smaller than the sum of its proper divisors (160796655800).

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

128617486120 is a wasteful number, since it uses less digits than its factorization.

128617486120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275545 (or 275541 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 128617486120 in words is "one hundred twenty-eight billion, six hundred seventeen million, four hundred eighty-six thousand, one hundred twenty".