320391027612 has 192 divisors, whose sum is σ = 903958272000. Its totient is φ = 97758296064.

The previous prime is 320391027599. The next prime is 320391027623. The reversal of 320391027612 is 216720193023.

320391027612 is a `hidden beast` number, since 3 + 2 + 0 + 3 + 9 + 10 + 27 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9701464 + ... + 9734432.

It is an arithmetic number, because the mean of its divisors is an integer number (4708116000).

Almost surely, 2^320391027612 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 320391027612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451979136000).

320391027612 is an abundant number, since it is smaller than the sum of its proper divisors (583567244388).

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

320391027612 is a wasteful number, since it uses less digits than its factorization.

320391027612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33145 (or 33137 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 320391027612 in words is "three hundred twenty billion, three hundred ninety-one million, twenty-seven thousand, six hundred twelve".