20648305167 has 36 divisors (see below), whose sum is σ = 33168564936. Its totient is φ = 11392100160.

The previous prime is 20648305133. The next prime is 20648305187. The reversal of 20648305167 is 76150384602.

It is not a de Polignac number, because 20648305167 - 2¹² = 20648301071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20648305187) 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 35 ways as a sum of consecutive naturals, for example, 40117 + ... + 207137.

It is an arithmetic number, because the mean of its divisors is an integer number (921349026).

Almost surely, 2^20648305167 is an apocalyptic number.

20648305167 is a deficient number, since it is larger than the sum of its proper divisors (12520259769).

20648305167 is a wasteful number, since it uses less digits than its factorization.

20648305167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167096 (or 167060 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

Adding to 20648305167 its reverse (76150384602), we get a palindrome (96798689769).

The spelling of 20648305167 in words is "twenty billion, six hundred forty-eight million, three hundred five thousand, one hundred sixty-seven".