128429201672 has 12 divisors (see below), whose sum is σ = 240806653695. Its totient is φ = 64214094024.

The previous prime is 128429201651. The next prime is 128429201683. The reversal of 128429201672 is 276102924821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 64214600836 + 64214600836 = 253406^2 + 253406^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=253406.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 950273 + ... + 1076975.

Almost surely, 2^128429201672 is an apocalyptic number.

It is an amenable number.

128429201672 is a deficient number, since it is larger than the sum of its proper divisors (112377452023).

128429201672 is an frugal number, since it uses more digits than its factorization.

128429201672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253412 (or 126705 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 128429201672 in words is "one hundred twenty-eight billion, four hundred twenty-nine million, two hundred one thousand, six hundred seventy-two".