320191139638384 has 160 divisors (see below), whose sum is σ = 732814922271744. Its totient is φ = 132690653921280.

The previous prime is 320191139638369. The next prime is 320191139638417. The reversal of 320191139638384 is 483836931191023.

It is a super-2 number, since 2×320191139638384² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1160130387 + ... + 1160406349.

Almost surely, 2^{320191139638384} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320191139638384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366407461135872).

320191139638384 is an abundant number, since it is smaller than the sum of its proper divisors (412623782633360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320191139638384 is a wasteful number, since it uses less digits than its factorization.

320191139638384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278855 (or 278849 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 320191139638384 in words is "three hundred twenty trillion, one hundred ninety-one billion, one hundred thirty-nine million, six hundred thirty-eight thousand, three hundred eighty-four".