20736520112 has 120 divisors (see below), whose sum is σ = 51560070480. Its totient is φ = 7988090880.

The previous prime is 20736520109. The next prime is 20736520121. The reversal of 20736520112 is 21102563702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754028 + ... + 781044.

It is an arithmetic number, because the mean of its divisors is an integer number (429667254).

Almost surely, 2^20736520112 is an apocalyptic number.

20736520112 is a gapful number since it is divisible by the number (22) 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 20736520112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25780035240).

20736520112 is an abundant number, since it is smaller than the sum of its proper divisors (30823550368).

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

20736520112 is a wasteful number, since it uses less digits than its factorization.

20736520112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27139 (or 27126 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 20736520112 in words is "twenty billion, seven hundred thirty-six million, five hundred twenty thousand, one hundred twelve".