326620902816 has 432 divisors, whose sum is σ = 1048760110944. Its totient is φ = 96287533056.

The previous prime is 326620902809. The next prime is 326620902833. The reversal of 326620902816 is 618209026623.

326620902816 is a `hidden beast` number, since 3 + 2 + 6 + 620 + 9 + 0 + 2 + 8 + 16 = 666.

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 71 ways as a sum of consecutive naturals, for example, 120656535 + ... + 120659241.

It is an arithmetic number, because the mean of its divisors is an integer number (2427685442).

Almost surely, 2^326620902816 is an apocalyptic number.

326620902816 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 326620902816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524380055472).

326620902816 is an abundant number, since it is smaller than the sum of its proper divisors (722139208128).

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

326620902816 is a wasteful number, since it uses less digits than its factorization.

326620902816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 326620902816 in words is "three hundred twenty-six billion, six hundred twenty million, nine hundred two thousand, eight hundred sixteen".