20345032332216 has 128 divisors (see below), whose sum is σ = 56901089952000. Its totient is φ = 6735319307136.

The previous prime is 20345032332173. The next prime is 20345032332293. The reversal of 20345032332216 is 61223323054302.

It is a happy number.

20345032332216 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 0 + 323 + 322 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30485095 + ... + 31145321.

It is an arithmetic number, because the mean of its divisors is an integer number (444539765250).

Almost surely, 2^{20345032332216} 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 20345032332216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28450544976000).

20345032332216 is an abundant number, since it is smaller than the sum of its proper divisors (36556057619784).

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

20345032332216 is a wasteful number, since it uses less digits than its factorization.

20345032332216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661218 (or 661208 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 20345032332216 its reverse (61223323054302), we get a palindrome (81568355386518).

The spelling of 20345032332216 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred thirty-two thousand, two hundred sixteen".