128127064611 has 64 divisors (see below), whose sum is σ = 216047068160. Its totient is φ = 65736437760.

The previous prime is 128127064609. The next prime is 128127064631. The reversal of 128127064611 is 116460721821.

It is not a de Polignac number, because 128127064611 - 2¹ = 128127064609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 128127064611.

It is not an unprimeable number, because it can be changed into a prime (128127064631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2806455 + ... + 2851743.

It is an arithmetic number, because the mean of its divisors is an integer number (3375735440).

Almost surely, 2^128127064611 is an apocalyptic number.

128127064611 is a deficient number, since it is larger than the sum of its proper divisors (87920003549).

128127064611 is a wasteful number, since it uses less digits than its factorization.

128127064611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45596.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 128127064611 in words is "one hundred twenty-eight billion, one hundred twenty-seven million, sixty-four thousand, six hundred eleven".