20023400354140 has 24 divisors (see below), whose sum is σ = 42065184020832. Its totient is φ = 8006304279360.

The previous prime is 20023400354137. The next prime is 20023400354147. The reversal of 20023400354140 is 4145300432002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20023400354099 and 20023400354108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023400354147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190937664 + ... + 191042503.

It is an arithmetic number, because the mean of its divisors is an integer number (1752716000868).

Almost surely, 2^{20023400354140} is an apocalyptic number.

20023400354140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023400354140 is an abundant number, since it is smaller than the sum of its proper divisors (22041783666692).

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

20023400354140 is a wasteful number, since it uses less digits than its factorization.

20023400354140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381982797 (or 381982795 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20023400354140 its reverse (4145300432002), we get a palindrome (24168700786142).

The spelling of 20023400354140 in words is "twenty trillion, twenty-three billion, four hundred million, three hundred fifty-four thousand, one hundred forty".