20666054073 has 16 divisors (see below), whose sum is σ = 31494476160. Its totient is φ = 11807918976.

The previous prime is 20666054041. The next prime is 20666054081. The reversal of 20666054073 is 37045066602.

It is not a de Polignac number, because 20666054073 - 2⁵ = 20666054041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20666054473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172543 + ... + 266651.

It is an arithmetic number, because the mean of its divisors is an integer number (1968404760).

Almost surely, 2^20666054073 is an apocalyptic number.

It is an amenable number.

20666054073 is a deficient number, since it is larger than the sum of its proper divisors (10828422087).

20666054073 is a wasteful number, since it uses less digits than its factorization.

20666054073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104576.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 20666054073 in words is "twenty billion, six hundred sixty-six million, fifty-four thousand, seventy-three".