20612161171106 has 8 divisors (see below), whose sum is σ = 31984388024220. Its totient is φ = 9950698496368.

The previous prime is 20612161171057. The next prime is 20612161171123. The reversal of 20612161171106 is 60117116121602.

It can be written as a sum of positive squares in 2 ways, for example, as 20047245082225 + 564916088881 = 4477415^2 + 751609^2 .

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

It is a super-2 number, since 2×20612161171106² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 177691044521 + ... + 177691044636.

Almost surely, 2^{20612161171106} is an apocalyptic number.

20612161171106 is a deficient number, since it is larger than the sum of its proper divisors (11372226853114).

20612161171106 is a wasteful number, since it uses less digits than its factorization.

20612161171106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355382089188.

The product of its (nonzero) digits is 6048, while the sum is 35.

Adding to 20612161171106 its reverse (60117116121602), we get a palindrome (80729277292708).

The spelling of 20612161171106 in words is "twenty trillion, six hundred twelve billion, one hundred sixty-one million, one hundred seventy-one thousand, one hundred six".