609128334719999 has 4 divisors (see below), whose sum is σ = 609146040429336. Its totient is φ = 609110629010664.

The previous prime is 609128334719981. The next prime is 609128334720011. The reversal of 609128334719999 is 999917433821906.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609128334719999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609128334719299) 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, 8852803064 + ... + 8852871869.

It is an arithmetic number, because the mean of its divisors is an integer number (152286510107334).

Almost surely, 2^{609128334719999} is an apocalyptic number.

609128334719999 is a deficient number, since it is larger than the sum of its proper divisors (17705709337).

609128334719999 is a wasteful number, since it uses less digits than its factorization.

609128334719999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17705709336.

The product of its (nonzero) digits is 1428513408, while the sum is 80.

The spelling of 609128334719999 in words is "six hundred nine trillion, one hundred twenty-eight billion, three hundred thirty-four million, seven hundred nineteen thousand, nine hundred ninety-nine".