324720395136 has 192 divisors, whose sum is σ = 973585267200. Its totient is φ = 103768335360.

The previous prime is 324720395123. The next prime is 324720395141. The reversal of 324720395136 is 631593027423.

324720395136 is a `hidden beast` number, since 3 + 247 + 2 + 0 + 395 + 13 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 324720395091 and 324720395100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3778695 + ... + 3863673.

It is an arithmetic number, because the mean of its divisors is an integer number (5070756600).

Almost surely, 2^324720395136 is an apocalyptic number.

324720395136 is a gapful number since it is divisible by the number (36) 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 324720395136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486792633600).

324720395136 is an abundant number, since it is smaller than the sum of its proper divisors (648864872064).

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

324720395136 is a wasteful number, since it uses less digits than its factorization.

324720395136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85137 (or 85122 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 324720395136 in words is "three hundred twenty-four billion, seven hundred twenty million, three hundred ninety-five thousand, one hundred thirty-six".