20523132120 has 128 divisors (see below), whose sum is σ = 63616573440. Its totient is φ = 5291205120.

The previous prime is 20523132103. The next prime is 20523132121. The reversal of 20523132120 is 2123132502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523132121) 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, 5291622 + ... + 5295498.

It is an arithmetic number, because the mean of its divisors is an integer number (497004480).

Almost surely, 2^20523132120 is an apocalyptic number.

20523132120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20523132120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31808286720).

20523132120 is an abundant number, since it is smaller than the sum of its proper divisors (43093441320).

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

20523132120 is a wasteful number, since it uses less digits than its factorization.

20523132120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345 (or 5341 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20523132120 its reverse (2123132502), we get a palindrome (22646264622).

The spelling of 20523132120 in words is "twenty billion, five hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty".