20320436164332 has 96 divisors (see below), whose sum is σ = 51205467640320. Its totient is φ = 6250879019520.

The previous prime is 20320436164331. The next prime is 20320436164361. The reversal of 20320436164332 is 23346163402302.

It is not an unprimeable number, because it can be changed into a prime (20320436164331) 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, 4439793 + ... + 7768695.

It is an arithmetic number, because the mean of its divisors is an integer number (533390287920).

Almost surely, 2^{20320436164332} 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 20320436164332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25602733820160).

20320436164332 is an abundant number, since it is smaller than the sum of its proper divisors (30885031475988).

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

20320436164332 is a wasteful number, since it uses less digits than its factorization.

20320436164332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329623 (or 3329621 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 39.

Adding to 20320436164332 its reverse (23346163402302), we get a palindrome (43666599566634).

The spelling of 20320436164332 in words is "twenty trillion, three hundred twenty billion, four hundred thirty-six million, one hundred sixty-four thousand, three hundred thirty-two".