20343041202340 has 48 divisors (see below), whose sum is σ = 42810986010240. Its totient is φ = 8119975288320.

The previous prime is 20343041202287. The next prime is 20343041202343. The reversal of 20343041202340 is 4320214034302.

It is a junction number, because it is equal to n+sod(n) for n = 20343041202299 and 20343041202308.

It is not an unprimeable number, because it can be changed into a prime (20343041202343) 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, 20083689 + ... + 21072271.

It is an arithmetic number, because the mean of its divisors is an integer number (891895541880).

Almost surely, 2^{20343041202340} is an apocalyptic number.

20343041202340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343041202340 is an abundant number, since it is smaller than the sum of its proper divisors (22467944807900).

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

20343041202340 is a wasteful number, since it uses less digits than its factorization.

20343041202340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990772 (or 990770 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20343041202340 its reverse (4320214034302), we get a palindrome (24663255236642).

The spelling of 20343041202340 in words is "twenty trillion, three hundred forty-three billion, forty-one million, two hundred two thousand, three hundred forty".