320387630265600 has 216 divisors, whose sum is σ = 1057386410875872. Its totient is φ = 85433430220800.

The previous prime is 320387630265557. The next prime is 320387630265701. The reversal of 320387630265600 is 6562036783023.

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 23 ways as a sum of consecutive naturals, for example, 523527790 + ... + 524139410.

Almost surely, 2^{320387630265600} is an apocalyptic number.

320387630265600 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320387630265600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528693205437936).

320387630265600 is an abundant number, since it is smaller than the sum of its proper divisors (736998780610272).

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

320387630265600 is a wasteful number, since it uses less digits than its factorization.

320387630265600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638933 (or 638914 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 51.

The spelling of 320387630265600 in words is "three hundred twenty trillion, three hundred eighty-seven billion, six hundred thirty million, two hundred sixty-five thousand, six hundred".