128327681227 has 8 divisors (see below), whose sum is σ = 135880102800. Its totient is φ = 120775674624.

The previous prime is 128327681221. The next prime is 128327681231. The reversal of 128327681227 is 722186723821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128327681227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128327681221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 719799 + ... + 880207.

It is an arithmetic number, because the mean of its divisors is an integer number (16985012850).

Almost surely, 2^128327681227 is an apocalyptic number.

128327681227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128327681227 is a deficient number, since it is larger than the sum of its proper divisors (7552421573).

128327681227 is a wasteful number, since it uses less digits than its factorization.

128327681227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207485.

The product of its digits is 903168, while the sum is 49.

The spelling of 128327681227 in words is "one hundred twenty-eight billion, three hundred twenty-seven million, six hundred eighty-one thousand, two hundred twenty-seven".