128442317064382 has 8 divisors (see below), whose sum is σ = 193631633766000. Its totient is φ = 63898439142384.

The previous prime is 128442317064379. The next prime is 128442317064389. The reversal of 128442317064382 is 283460713244821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128442317064389) 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, 161359694407 + ... + 161359695202.

It is an arithmetic number, because the mean of its divisors is an integer number (24203954220750).

Almost surely, 2^{128442317064382} is an apocalyptic number.

128442317064382 is a deficient number, since it is larger than the sum of its proper divisors (65189316701618).

128442317064382 is a wasteful number, since it uses less digits than its factorization.

128442317064382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322719389810.

The product of its (nonzero) digits is 12386304, while the sum is 55.

The spelling of 128442317064382 in words is "one hundred twenty-eight trillion, four hundred forty-two billion, three hundred seventeen million, sixty-four thousand, three hundred eighty-two".