20143442404040 has 32 divisors (see below), whose sum is σ = 47708153064000. Its totient is φ = 7633304489664.

The previous prime is 20143442404013. The next prime is 20143442404069. The reversal of 20143442404040 is 4040424434102.

It is a junction number, because it is equal to n+sod(n) for n = 20143442403988 and 20143442404006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13252263980 + ... + 13252265499.

It is an arithmetic number, because the mean of its divisors is an integer number (1490879783250).

Almost surely, 2^{20143442404040} is an apocalyptic number.

20143442404040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143442404040 is an abundant number, since it is smaller than the sum of its proper divisors (27564710659960).

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

20143442404040 is a wasteful number, since it uses less digits than its factorization.

20143442404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26504529509 (or 26504529505 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 20143442404040 its reverse (4040424434102), we get a palindrome (24183866838142).

The spelling of 20143442404040 in words is "twenty trillion, one hundred forty-three billion, four hundred forty-two million, four hundred four thousand, forty".