326809635768 has 512 divisors, whose sum is σ = 1148977612800. Its totient is φ = 83607552000.

The previous prime is 326809635767. The next prime is 326809635769. The reversal of 326809635768 is 867536908623.

It is an interprime number because it is at equal distance from previous prime (326809635767) and next prime (326809635769).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326809635767) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 431716446 + ... + 431717202.

It is an arithmetic number, because the mean of its divisors is an integer number (2244096900).

Almost surely, 2^326809635768 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 326809635768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574488806400).

326809635768 is an abundant number, since it is smaller than the sum of its proper divisors (822167977032).

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

326809635768 is a wasteful number, since it uses less digits than its factorization.

326809635768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 326809635768 in words is "three hundred twenty-six billion, eight hundred nine million, six hundred thirty-five thousand, seven hundred sixty-eight".