326523400000 has 168 divisors, whose sum is σ = 925580259072. Its totient is φ = 111950400000.

The previous prime is 326523399997. The next prime is 326523400031. The reversal of 326523400000 is 4325623.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1283385 + ... + 1516615.

It is an arithmetic number, because the mean of its divisors is an integer number (5509406304).

Almost surely, 2^326523400000 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 326523400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462790129536).

326523400000 is an abundant number, since it is smaller than the sum of its proper divisors (599056859072).

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

326523400000 is an frugal number, since it uses more digits than its factorization.

326523400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233275 (or 233245 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 326523400000 its reverse (4325623), we get a palindrome (326527725623).

The spelling of 326523400000 in words is "three hundred twenty-six billion, five hundred twenty-three million, four hundred thousand".