128192000009 has 4 divisors (see below), whose sum is σ = 128756722704. Its totient is φ = 127627277316.

The previous prime is 128192000003. The next prime is 128192000021. The reversal of 128192000009 is 900000291821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128192000009 - 2⁸ = 128191999753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128192000003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282361007 + ... + 282361460.

It is an arithmetic number, because the mean of its divisors is an integer number (32189180676).

Almost surely, 2^128192000009 is an apocalyptic number.

It is an amenable number.

128192000009 is a deficient number, since it is larger than the sum of its proper divisors (564722695).

128192000009 is an equidigital number, since it uses as much as digits as its factorization.

128192000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564722694.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 128192000009 in words is "one hundred twenty-eight billion, one hundred ninety-two million, nine", and thus it is an aban number.