20543163207 has 16 divisors (see below), whose sum is σ = 32664906240. Its totient is φ = 11228560992.

The previous prime is 20543163167. The next prime is 20543163227. The reversal of 20543163207 is 70236134502.

It is not a de Polignac number, because 20543163207 - 2¹⁴ = 20543146823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20543163227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21265732 + ... + 21266697.

It is an arithmetic number, because the mean of its divisors is an integer number (2041556640).

Almost surely, 2^20543163207 is an apocalyptic number.

20543163207 is a deficient number, since it is larger than the sum of its proper divisors (12121743033).

20543163207 is a wasteful number, since it uses less digits than its factorization.

20543163207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42532462.

The product of its (nonzero) digits is 30240, while the sum is 33.

Adding to 20543163207 its reverse (70236134502), we get a palindrome (90779297709).

The spelling of 20543163207 in words is "twenty billion, five hundred forty-three million, one hundred sixty-three thousand, two hundred seven".