20424400401443 has 8 divisors (see below), whose sum is σ = 21531831859200. Its totient is φ = 19345005183240.

The previous prime is 20424400401367. The next prime is 20424400401451. The reversal of 20424400401443 is 34410400442402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20424400401443 - 2⁴⁰ = 19324888773667 is a prime.

It is a super-2 number, since 2×20424400401443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424400401463) 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, 7009058393 + ... + 7009061306.

It is an arithmetic number, because the mean of its divisors is an integer number (2691478982400).

Almost surely, 2^{20424400401443} is an apocalyptic number.

20424400401443 is a deficient number, since it is larger than the sum of its proper divisors (1107431457757).

20424400401443 is a wasteful number, since it uses less digits than its factorization.

20424400401443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14018119777.

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

Adding to 20424400401443 its reverse (34410400442402), we get a palindrome (54834800843845).

The spelling of 20424400401443 in words is "twenty trillion, four hundred twenty-four billion, four hundred million, four hundred one thousand, four hundred forty-three".