326561830620 has 144 divisors (see below), whose sum is σ = 953045384928. Its totient is φ = 83542717440.

The previous prime is 326561830607. The next prime is 326561830643. The reversal of 326561830620 is 26038165623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7901610 + ... + 7942830.

Almost surely, 2^326561830620 is an apocalyptic number.

326561830620 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 326561830620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476522692464).

326561830620 is an abundant number, since it is smaller than the sum of its proper divisors (626483554308).

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

326561830620 is a wasteful number, since it uses less digits than its factorization.

326561830620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41448 (or 41417 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 326561830620 in words is "three hundred twenty-six billion, five hundred sixty-one million, eight hundred thirty thousand, six hundred twenty".