128161620752 has 40 divisors (see below), whose sum is σ = 271098675360. Its totient is φ = 58209774080.

The previous prime is 128161620751. The next prime is 128161620767. The reversal of 128161620752 is 257026161821.

It is not an unprimeable number, because it can be changed into a prime (128161620751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57977 + ... + 509592.

It is an arithmetic number, because the mean of its divisors is an integer number (6777466884).

Almost surely, 2^128161620752 is an apocalyptic number.

It is an amenable number.

128161620752 is an abundant number, since it is smaller than the sum of its proper divisors (142937054608).

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

128161620752 is a wasteful number, since it uses less digits than its factorization.

128161620752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568871 (or 568865 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 128161620752 in words is "one hundred twenty-eight billion, one hundred sixty-one million, six hundred twenty thousand, seven hundred fifty-two".