326163273495920 has 160 divisors (see below), whose sum is σ = 870904885710336. Its totient is φ = 111280156646400.

The previous prime is 326163273495901. The next prime is 326163273495923. The reversal of 326163273495920 is 29594372361623.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326163273495923) 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, 773382710 + ... + 773804330.

Almost surely, 2^{326163273495920} 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 326163273495920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435452442855168).

326163273495920 is an abundant number, since it is smaller than the sum of its proper divisors (544741612214416).

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

326163273495920 is a wasteful number, since it uses less digits than its factorization.

326163273495920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428399 (or 428393 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 62.

The spelling of 326163273495920 in words is "three hundred twenty-six trillion, one hundred sixty-three billion, two hundred seventy-three million, four hundred ninety-five thousand, nine hundred twenty".