20066560005 has 32 divisors (see below), whose sum is σ = 33237734400. Its totient is φ = 10325622272.

The previous prime is 20066559991. The next prime is 20066560021. The reversal of 20066560005 is 50006566002.

It is a cyclic number.

It is not a de Polignac number, because 20066560005 - 2¹² = 20066555909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609937 + ... + 641993.

It is an arithmetic number, because the mean of its divisors is an integer number (1038679200).

Almost surely, 2^20066560005 is an apocalyptic number.

It is an amenable number.

20066560005 is a deficient number, since it is larger than the sum of its proper divisors (13171174395).

20066560005 is a wasteful number, since it uses less digits than its factorization.

20066560005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33533.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20066560005 in words is "twenty billion, sixty-six million, five hundred sixty thousand, five".