20686433773601 has 16 divisors (see below), whose sum is σ = 21146070249408. Its totient is φ = 20230875403200.

The previous prime is 20686433773597. The next prime is 20686433773637. The reversal of 20686433773601 is 10637733468602.

It is a cyclic number.

It is not a de Polignac number, because 20686433773601 - 2² = 20686433773597 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20686433773001) 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, 12245030 + ... + 13831616.

It is an arithmetic number, because the mean of its divisors is an integer number (1321629390588).

Almost surely, 2^{20686433773601} is an apocalyptic number.

It is an amenable number.

20686433773601 is a deficient number, since it is larger than the sum of its proper divisors (459636475807).

20686433773601 is a wasteful number, since it uses less digits than its factorization.

20686433773601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587872.

The product of its (nonzero) digits is 18289152, while the sum is 56.

The spelling of 20686433773601 in words is "twenty trillion, six hundred eighty-six billion, four hundred thirty-three million, seven hundred seventy-three thousand, six hundred one".