128247882887 has 8 divisors (see below), whose sum is σ = 142938817200.
Its totient is φ = 114351053184.
The previous prime is 128247882857. The next prime is 128247882923. The reversal of 128247882887 is 788288742821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 128247882887 - 210 = 128247881863 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128247882857) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198525812 + ... + 198526457.
It is an arithmetic number, because the mean of its divisors is an integer number (17867352150).
Almost surely, 2128247882887 is an apocalyptic number.
128247882887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.
128247882887 is a deficient number, since it is larger than the sum of its proper divisors (14690934313).
128247882887 is a wasteful number, since it uses less digits than its factorization.
128247882887 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 397052305.
The product of its digits is 51380224, while the sum is 65.
The spelling of 128247882887 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-two thousand, eight hundred eighty-seven".