128372323199 has 2 divisors, whose sum is σ = 128372323200. Its totient is φ = 128372323198.

The previous prime is 128372323187. The next prime is 128372323217. The reversal of 128372323199 is 991323273821.

It is a weak prime.

It is an emirp because it is prime and its reverse (991323273821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128372323199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128372323129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64186161599 + 64186161600.

It is an arithmetic number, because the mean of its divisors is an integer number (64186161600).

Almost surely, 2^128372323199 is an apocalyptic number.

128372323199 is a deficient number, since it is larger than the sum of its proper divisors (1).

128372323199 is an equidigital number, since it uses as much as digits as its factorization.

128372323199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The spelling of 128372323199 in words is "one hundred twenty-eight billion, three hundred seventy-two million, three hundred twenty-three thousand, one hundred ninety-nine".