20143630215643 has 8 divisors (see below), whose sum is σ = 21975296219136. Its totient is φ = 18312035361000.

The previous prime is 20143630215641. The next prime is 20143630215673. The reversal of 20143630215643 is 34651203634102.

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 20143630215643 - 2¹ = 20143630215641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20143630215596 and 20143630215605.

It is not an unprimeable number, because it can be changed into a prime (20143630215641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17194371 + ... + 18328492.

It is an arithmetic number, because the mean of its divisors is an integer number (2746912027392).

Almost surely, 2^{20143630215643} is an apocalyptic number.

20143630215643 is a deficient number, since it is larger than the sum of its proper divisors (1831666003493).

20143630215643 is a wasteful number, since it uses less digits than its factorization.

20143630215643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35574425.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 20143630215643 its reverse (34651203634102), we get a palindrome (54794833849745).

The spelling of 20143630215643 in words is "twenty trillion, one hundred forty-three billion, six hundred thirty million, two hundred fifteen thousand, six hundred forty-three".