323155223552 has 88 divisors (see below), whose sum is σ = 746576599680. Its totient is φ = 136938700800.

The previous prime is 323155223533. The next prime is 323155223591. The reversal of 323155223552 is 255322551323.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384677 + ... + 891227.

Almost surely, 2^323155223552 is an apocalyptic number.

323155223552 is a gapful number since it is divisible by the number (32) 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 323155223552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373288299840).

323155223552 is an abundant number, since it is smaller than the sum of its proper divisors (423421376128).

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

323155223552 is an equidigital number, since it uses as much as digits as its factorization.

323155223552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506667 (or 506649 counting only the distinct ones).

The product of its digits is 270000, while the sum is 38.

Adding to 323155223552 its reverse (255322551323), we get a palindrome (578477774875).

The spelling of 323155223552 in words is "three hundred twenty-three billion, one hundred fifty-five million, two hundred twenty-three thousand, five hundred fifty-two".