20841833740 has 144 divisors (see below), whose sum is σ = 57351333312. Its totient is φ = 6207971328.

The previous prime is 20841833707. The next prime is 20841833743. The reversal of 20841833740 is 4733814802.

It is a junction number, because it is equal to n+sod(n) for n = 20841833693 and 20841833702.

It is not an unprimeable number, because it can be changed into a prime (20841833743) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376312 + ... + 428128.

It is an arithmetic number, because the mean of its divisors is an integer number (398273148).

Almost surely, 2^20841833740 is an apocalyptic number.

20841833740 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 20841833740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28675666656).

20841833740 is an abundant number, since it is smaller than the sum of its proper divisors (36509499572).

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

20841833740 is a wasteful number, since it uses less digits than its factorization.

20841833740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51876 (or 51861 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20841833740 in words is "twenty billion, eight hundred forty-one million, eight hundred thirty-three thousand, seven hundred forty".