20473432064109 has 12 divisors (see below), whose sum is σ = 29788594586556. Its totient is φ = 13549327301952.

The previous prime is 20473432063993. The next prime is 20473432064147. The reversal of 20473432064109 is 90146023437402.

20473432064109 is a `hidden beast` number, since 20 + 4 + 7 + 3 + 4 + 3 + 206 + 410 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15637105366884 + 4836326697225 = 3954378^2 + 2199165^2 .

It is not a de Polignac number, because 20473432064109 - 2⁹ = 20473432063597 is a prime.

It is a super-2 number, since 2×20473432064109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473432064509) 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 11 ways as a sum of consecutive naturals, for example, 8302282654 + ... + 8302285119.

It is an arithmetic number, because the mean of its divisors is an integer number (2482382882213).

Almost surely, 2^{20473432064109} is an apocalyptic number.

It is an amenable number.

20473432064109 is a deficient number, since it is larger than the sum of its proper divisors (9315162522447).

20473432064109 is a wasteful number, since it uses less digits than its factorization.

20473432064109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16604567916 (or 16604567913 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 20473432064109 in words is "twenty trillion, four hundred seventy-three billion, four hundred thirty-two million, sixty-four thousand, one hundred nine".