20350242623443 has 32 divisors (see below), whose sum is σ = 21628745150976. Its totient is φ = 19106698963968.

The previous prime is 20350242623429. The next prime is 20350242623497. The reversal of 20350242623443 is 34432624205302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20350242623443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20350242623396 and 20350242623405.

It is not an unprimeable number, because it can be changed into a prime (20350242627443) 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 31 ways as a sum of consecutive naturals, for example, 790379896 + ... + 790405642.

It is an arithmetic number, because the mean of its divisors is an integer number (675898285968).

Almost surely, 2^{20350242623443} is an apocalyptic number.

20350242623443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20350242623443 is a deficient number, since it is larger than the sum of its proper divisors (1278502527533).

20350242623443 is a wasteful number, since it uses less digits than its factorization.

20350242623443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27643.

The product of its (nonzero) digits is 829440, while the sum is 40.

Adding to 20350242623443 its reverse (34432624205302), we get a palindrome (54782866828745).

The spelling of 20350242623443 in words is "twenty trillion, three hundred fifty billion, two hundred forty-two million, six hundred twenty-three thousand, four hundred forty-three".