20771706067 has 12 divisors (see below), whose sum is σ = 23876144656. Its totient is φ = 17701580160.

The previous prime is 20771706041. The next prime is 20771706079. The reversal of 20771706067 is 76060717702.

It is not a de Polignac number, because 20771706067 - 2¹⁹ = 20771181779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20771704067) 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, 5128059 + ... + 5132107.

Almost surely, 2^20771706067 is an apocalyptic number.

20771706067 is a deficient number, since it is larger than the sum of its proper divisors (3104438589).

20771706067 is an frugal number, since it uses more digits than its factorization.

20771706067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8286 (or 4237 counting only the distinct ones).

The product of its (nonzero) digits is 172872, while the sum is 43.

The spelling of 20771706067 in words is "twenty billion, seven hundred seventy-one million, seven hundred six thousand, sixty-seven".