20650975232 has 56 divisors (see below), whose sum is σ = 41377429056. Its totient is φ = 10305994752.

The previous prime is 20650975231. The next prime is 20650975249. The reversal of 20650975232 is 23257905602.

It is a self number, because there is not a number n which added to its sum of digits gives 20650975232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650975231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4970468 + ... + 4974620.

Almost surely, 2^20650975232 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 20650975232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20688714528).

20650975232 is an abundant number, since it is smaller than the sum of its proper divisors (20726453824).

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

20650975232 is an frugal number, since it uses more digits than its factorization.

20650975232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4786 (or 4762 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 20650975232 in words is "twenty billion, six hundred fifty million, nine hundred seventy-five thousand, two hundred thirty-two".