20043351340 has 48 divisors (see below), whose sum is σ = 42268760352. Its totient is φ = 7983553536.

The previous prime is 20043351259. The next prime is 20043351343. The reversal of 20043351340 is 4315334002.

It is not an unprimeable number, because it can be changed into a prime (20043351343) 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, 7837342 + ... + 7839898.

It is an arithmetic number, because the mean of its divisors is an integer number (880599174).

Almost surely, 2^20043351340 is an apocalyptic number.

20043351340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043351340 is an abundant number, since it is smaller than the sum of its proper divisors (22225409012).

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

20043351340 is a wasteful number, since it uses less digits than its factorization.

20043351340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20043351340 its reverse (4315334002), we get a palindrome (24358685342).

The spelling of 20043351340 in words is "twenty billion, forty-three million, three hundred fifty-one thousand, three hundred forty".