20666054072 has 16 divisors (see below), whose sum is σ = 39027622200. Its totient is φ = 10258688160.

The previous prime is 20666054041. The next prime is 20666054081. The reversal of 20666054072 is 27045066602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9291179 + ... + 9293402.

Almost surely, 2^20666054072 is an apocalyptic number.

It is an amenable number.

20666054072 is a deficient number, since it is larger than the sum of its proper divisors (18361568128).

20666054072 is a wasteful number, since it uses less digits than its factorization.

20666054072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18584726 (or 18584722 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20666054072 in words is "twenty billion, six hundred sixty-six million, fifty-four thousand, seventy-two".