20589361164 has 120 divisors (see below), whose sum is σ = 57068949168. Its totient is φ = 6450554880.

The previous prime is 20589361129. The next prime is 20589361183. The reversal of 20589361164 is 46116398502.

20589361164 is a `hidden beast` number, since 2 + 0 + 589 + 3 + 6 + 1 + 1 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4850427 + ... + 4854669.

Almost surely, 2^20589361164 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 20589361164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28534474584).

20589361164 is an abundant number, since it is smaller than the sum of its proper divisors (36479588004).

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

20589361164 is a wasteful number, since it uses less digits than its factorization.

20589361164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5146 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 20589361164 in words is "twenty billion, five hundred eighty-nine million, three hundred sixty-one thousand, one hundred sixty-four".