20355325542330 has 128 divisors (see below), whose sum is σ = 49802004562176. Its totient is φ = 5323388928000.

The previous prime is 20355325542319. The next prime is 20355325542361. The reversal of 20355325542330 is 3324552355302.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 419906974 + ... + 419955446.

It is an arithmetic number, because the mean of its divisors is an integer number (389078160642).

Almost surely, 2^{20355325542330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20355325542330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24901002281088).

20355325542330 is an abundant number, since it is smaller than the sum of its proper divisors (29446679019846).

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

20355325542330 is a wasteful number, since it uses less digits than its factorization.

20355325542330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49472.

The product of its (nonzero) digits is 1620000, while the sum is 42.

Adding to 20355325542330 its reverse (3324552355302), we get a palindrome (23679877897632).

The spelling of 20355325542330 in words is "twenty trillion, three hundred fifty-five billion, three hundred twenty-five million, five hundred forty-two thousand, three hundred thirty".