20243302320040 has 64 divisors (see below), whose sum is σ = 46886977992960. Its totient is φ = 7860194645760.

The previous prime is 20243302319993. The next prime is 20243302320041. The reversal of 20243302320040 is 4002320334202.

It is a junction number, because it is equal to n+sod(n) for n = 20243302319987 and 20243302320014.

It is not an unprimeable number, because it can be changed into a prime (20243302320041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15229762 + ... + 16505521.

It is an arithmetic number, because the mean of its divisors is an integer number (732609031140).

Almost surely, 2^{20243302320040} is an apocalyptic number.

20243302320040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20243302320040 is an abundant number, since it is smaller than the sum of its proper divisors (26643675672920).

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

20243302320040 is a wasteful number, since it uses less digits than its factorization.

20243302320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31735762 (or 31735758 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 20243302320040 its reverse (4002320334202), we get a palindrome (24245622654242).

The spelling of 20243302320040 in words is "twenty trillion, two hundred forty-three billion, three hundred two million, three hundred twenty thousand, forty".