128829554380218 has 64 divisors (see below), whose sum is σ = 268704244500480. Its totient is φ = 41138742376512.

The previous prime is 128829554380199. The next prime is 128829554380231. The reversal of 128829554380218 is 812083455928821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28204155 + ... + 32452017.

It is an arithmetic number, because the mean of its divisors is an integer number (4198503820320).

Almost surely, 2^{128829554380218} is an apocalyptic number.

128829554380218 is an abundant number, since it is smaller than the sum of its proper divisors (139874690120262).

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

128829554380218 is a wasteful number, since it uses less digits than its factorization.

128829554380218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250011.

The product of its (nonzero) digits is 88473600, while the sum is 66.

The spelling of 128829554380218 in words is "one hundred twenty-eight trillion, eight hundred twenty-nine billion, five hundred fifty-four million, three hundred eighty thousand, two hundred eighteen".