20306512163 has 8 divisors (see below), whose sum is σ = 23361135360. Its totient is φ = 17290312200.

The previous prime is 20306512141. The next prime is 20306512201. The reversal of 20306512163 is 36121560302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20306512163 - 2¹⁰ = 20306511139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20306512663) 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 7 ways as a sum of consecutive naturals, for example, 9604673 + ... + 9606786.

It is an arithmetic number, because the mean of its divisors is an integer number (2920141920).

Almost surely, 2^20306512163 is an apocalyptic number.

20306512163 is a deficient number, since it is larger than the sum of its proper divisors (3054623197).

20306512163 is a wasteful number, since it uses less digits than its factorization.

20306512163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211617.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 20306512163 in words is "twenty billion, three hundred six million, five hundred twelve thousand, one hundred sixty-three".