326513044000 has 192 divisors, whose sum is σ = 942496394112. Its totient is φ = 109598592000.

The previous prime is 326513043887. The next prime is 326513044001. The reversal of 326513044000 is 440315623.

It is a super-2 number, since 2×326513044000² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 326513044000.

It is not an unprimeable number, because it can be changed into a prime (326513044001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286587 + ... + 857413.

It is an arithmetic number, because the mean of its divisors is an integer number (4908835386).

Almost surely, 2^326513044000 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 326513044000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471248197056).

326513044000 is an abundant number, since it is smaller than the sum of its proper divisors (615983350112).

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

326513044000 is a wasteful number, since it uses less digits than its factorization.

326513044000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570876 (or 570858 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 326513044000 its reverse (440315623), we get a palindrome (326953359623).

The spelling of 326513044000 in words is "three hundred twenty-six billion, five hundred thirteen million, forty-four thousand".