128161852008 has 64 divisors (see below), whose sum is σ = 337315137600. Its totient is φ = 40466511360.

The previous prime is 128161851991. The next prime is 128161852019. The reversal of 128161852008 is 800258161821.

It is a Cunningham number, because it is equal to 357997²-1.

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 15 ways as a sum of consecutive naturals, for example, 4281060 + ... + 4310892.

It is an arithmetic number, because the mean of its divisors is an integer number (5270549025).

Almost surely, 2^128161852008 is an apocalyptic number.

It is an amenable number.

128161852008 is an abundant number, since it is smaller than the sum of its proper divisors (209153285592).

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

128161852008 is a wasteful number, since it uses less digits than its factorization.

128161852008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39282 (or 39278 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 42.

The spelling of 128161852008 in words is "one hundred twenty-eight billion, one hundred sixty-one million, eight hundred fifty-two thousand, eight".