128321701485 has 16 divisors (see below), whose sum is σ = 205325171136. Its totient is φ = 68434757888.

The previous prime is 128321701457. The next prime is 128321701523. The reversal of 128321701485 is 584107123821.

It is a cyclic number.

It is not a de Polignac number, because 128321701485 - 2⁸ = 128321701229 is a prime.

It is a congruent number.

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, 102037 + ... + 516773.

It is an arithmetic number, because the mean of its divisors is an integer number (12832823196).

Almost surely, 2^128321701485 is an apocalyptic number.

128321701485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128321701485 is a deficient number, since it is larger than the sum of its proper divisors (77003469651).

128321701485 is a wasteful number, since it uses less digits than its factorization.

128321701485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435372.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 128321701485 in words is "one hundred twenty-eight billion, three hundred twenty-one million, seven hundred one thousand, four hundred eighty-five".