128485016320 has 72 divisors (see below), whose sum is σ = 323959814640. Its totient is φ = 48689049600.

The previous prime is 128485016291. The next prime is 128485016347. The reversal of 128485016320 is 23610584821.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 7 ways as a sum of consecutive naturals, for example, 2617231 + ... + 2665870.

It is an arithmetic number, because the mean of its divisors is an integer number (4499441870).

Almost surely, 2^128485016320 is an apocalyptic number.

128485016320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128485016320 is an abundant number, since it is smaller than the sum of its proper divisors (195474798320).

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

128485016320 is an equidigital number, since it uses as much as digits as its factorization.

128485016320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5283141 (or 5283127 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 128485016320 in words is "one hundred twenty-eight billion, four hundred eighty-five million, sixteen thousand, three hundred twenty".