20813334848 has 56 divisors (see below), whose sum is σ = 42025412520. Its totient is φ = 10225336320.

The previous prime is 20813334827. The next prime is 20813334851. The reversal of 20813334848 is 84843331802.

It can be written as a sum of positive squares in 4 ways, for example, as 320839744 + 20492495104 = 17912^2 + 143152^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20813334799 and 20813334808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248488 + ... + 1265048.

It is an arithmetic number, because the mean of its divisors is an integer number (750453795).

Almost surely, 2^20813334848 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 20813334848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21012706260).

20813334848 is an abundant number, since it is smaller than the sum of its proper divisors (21212077672).

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

20813334848 is a wasteful number, since it uses less digits than its factorization.

20813334848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16915 (or 16905 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 20813334848 in words is "twenty billion, eight hundred thirteen million, three hundred thirty-four thousand, eight hundred forty-eight".