128256500211 has 16 divisors (see below), whose sum is σ = 195962452224. Its totient is φ = 73092937824.

The previous prime is 128256500171. The next prime is 128256500213. The reversal of 128256500211 is 112005652821.

It is not a de Polignac number, because 128256500211 - 2¹⁸ = 128256238067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128256500213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8179101 + ... + 8194766.

It is an arithmetic number, because the mean of its divisors is an integer number (12247653264).

Almost surely, 2^128256500211 is an apocalyptic number.

128256500211 is a deficient number, since it is larger than the sum of its proper divisors (67705952013).

128256500211 is a wasteful number, since it uses less digits than its factorization.

128256500211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16374250.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 128256500211 in words is "one hundred twenty-eight billion, two hundred fifty-six million, five hundred thousand, two hundred eleven".