324420517840 has 80 divisors (see below), whose sum is σ = 761122535040. Its totient is φ = 128594096640.

The previous prime is 324420517829. The next prime is 324420517847. The reversal of 324420517840 is 48715024423.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 324420517793 and 324420517802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324420517847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5988957 + ... + 6042883.

It is an arithmetic number, because the mean of its divisors is an integer number (9514031688).

Almost surely, 2^324420517840 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 324420517840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380561267520).

324420517840 is an abundant number, since it is smaller than the sum of its proper divisors (436702017200).

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

324420517840 is a wasteful number, since it uses less digits than its factorization.

324420517840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54620 (or 54614 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 324420517840 in words is "three hundred twenty-four billion, four hundred twenty million, five hundred seventeen thousand, eight hundred forty".