20852883648 has 168 divisors, whose sum is σ = 65248048320. Its totient is φ = 6585027840.

The previous prime is 20852883559. The next prime is 20852883673. The reversal of 20852883648 is 84638825802.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 20852883594 and 20852883603.

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, 260203 + ... + 330773.

It is an arithmetic number, because the mean of its divisors is an integer number (388381240).

Almost surely, 2^20852883648 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 20852883648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32624024160).

20852883648 is an abundant number, since it is smaller than the sum of its proper divisors (44395164672).

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

20852883648 is an equidigital number, since it uses as much as digits as its factorization.

20852883648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70617 (or 70595 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 20852883648 in words is "twenty billion, eight hundred fifty-two million, eight hundred eighty-three thousand, six hundred forty-eight".