128196799199 has 16 divisors (see below), whose sum is σ = 146733000000. Its totient is φ = 109716332544.

The previous prime is 128196799153. The next prime is 128196799219. The reversal of 128196799199 is 991997691821.

It is not a de Polignac number, because 128196799199 - 2²⁰ = 128195750623 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128196799799) 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, 14482727 + ... + 14491575.

It is an arithmetic number, because the mean of its divisors is an integer number (9170812500).

Almost surely, 2^128196799199 is an apocalyptic number.

128196799199 is a deficient number, since it is larger than the sum of its proper divisors (18536200801).

128196799199 is a wasteful number, since it uses less digits than its factorization.

128196799199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11762.

The product of its digits is 39680928, while the sum is 71.

The spelling of 128196799199 in words is "one hundred twenty-eight billion, one hundred ninety-six million, seven hundred ninety-nine thousand, one hundred ninety-nine".