128213729288 has 16 divisors (see below), whose sum is σ = 243693904380. Its totient is φ = 63228688128.

The previous prime is 128213729201. The next prime is 128213729311. The reversal of 128213729288 is 882927312821.

It can be written as a sum of positive squares in 2 ways, for example, as 110156282404 + 18057446884 = 331898^2 + 134378^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109771445 + ... + 109772612.

Almost surely, 2^128213729288 is an apocalyptic number.

It is an amenable number.

128213729288 is a deficient number, since it is larger than the sum of its proper divisors (115480175092).

128213729288 is a wasteful number, since it uses less digits than its factorization.

128213729288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219544136 (or 219544132 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The spelling of 128213729288 in words is "one hundred twenty-eight billion, two hundred thirteen million, seven hundred twenty-nine thousand, two hundred eighty-eight".