20552873712 has 160 divisors (see below), whose sum is σ = 61766380032. Its totient is φ = 5768036352.

The previous prime is 20552873687. The next prime is 20552873717. The reversal of 20552873712 is 21737825502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552873717) 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, 4462803 + ... + 4467405.

Almost surely, 2^20552873712 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 20552873712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30883190016).

20552873712 is an abundant number, since it is smaller than the sum of its proper divisors (41213506320).

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

20552873712 is a wasteful number, since it uses less digits than its factorization.

20552873712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4855 (or 4849 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 20552873712 in words is "twenty billion, five hundred fifty-two million, eight hundred seventy-three thousand, seven hundred twelve".