20384685063 has 12 divisors (see below), whose sum is σ = 29446757808. Its totient is φ = 13588768800.

The previous prime is 20384684953. The next prime is 20384685071. The reversal of 20384685063 is 36058648302.

It is a happy number.

20384685063 is a `hidden beast` number, since 2 + 0 + 3 + 84 + 68 + 506 + 3 = 666.

It is not a de Polignac number, because 20384685063 - 2⁸ = 20384684807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20384685863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53131 + ... + 208787.

It is an arithmetic number, because the mean of its divisors is an integer number (2453896484).

Almost surely, 2^20384685063 is an apocalyptic number.

20384685063 is a deficient number, since it is larger than the sum of its proper divisors (9062072745).

20384685063 is a wasteful number, since it uses less digits than its factorization.

20384685063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170214 (or 170211 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 20384685063 in words is "twenty billion, three hundred eighty-four million, six hundred eighty-five thousand, sixty-three".