20732020164 has 288 divisors, whose sum is σ = 59175567360. Its totient is φ = 6092755200.

The previous prime is 20732020159. The next prime is 20732020187. The reversal of 20732020164 is 46102023702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 70757602 + ... + 70757894.

It is an arithmetic number, because the mean of its divisors is an integer number (205470720).

Almost surely, 2^20732020164 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 20732020164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29587783680).

20732020164 is an abundant number, since it is smaller than the sum of its proper divisors (38443547196).

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

20732020164 is a wasteful number, since it uses less digits than its factorization.

20732020164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 20732020164 its reverse (46102023702), we get a palindrome (66834043866).

The spelling of 20732020164 in words is "twenty billion, seven hundred thirty-two million, twenty thousand, one hundred sixty-four".