128919218604 has 48 divisors (see below), whose sum is σ = 328450604160. Its totient is φ = 39031597440.

The previous prime is 128919218587. The next prime is 128919218629. The reversal of 128919218604 is 406812919821.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 286609 + ... + 583080.

It is an arithmetic number, because the mean of its divisors is an integer number (6842720920).

Almost surely, 2^128919218604 is an apocalyptic number.

It is an amenable number.

128919218604 is an abundant number, since it is smaller than the sum of its proper divisors (199531385556).

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

128919218604 is a wasteful number, since it uses less digits than its factorization.

128919218604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870830 (or 870828 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The spelling of 128919218604 in words is "one hundred twenty-eight billion, nine hundred nineteen million, two hundred eighteen thousand, six hundred four".