323620428072540 has 192 divisors, whose sum is σ = 927159084601344. Its totient is φ = 84303655206912.

The previous prime is 323620428072533. The next prime is 323620428072563. The reversal of 323620428072540 is 45270824026323.

It is a super-3 number, since 3×323620428072540³ (a number of 45 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 323620428072540.

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, 16559394009 + ... + 16559413551.

It is an arithmetic number, because the mean of its divisors is an integer number (4828953565632).

Almost surely, 2^{323620428072540} is an apocalyptic number.

323620428072540 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 323620428072540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463579542300672).

323620428072540 is an abundant number, since it is smaller than the sum of its proper divisors (603538656528804).

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

323620428072540 is a wasteful number, since it uses less digits than its factorization.

323620428072540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30356 (or 30354 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 48.

The spelling of 323620428072540 in words is "three hundred twenty-three trillion, six hundred twenty billion, four hundred twenty-eight million, seventy-two thousand, five hundred forty".