20106564005 has 32 divisors (see below), whose sum is σ = 27749046528. Its totient is φ = 13842892800.

The previous prime is 20106564001. The next prime is 20106564011. The reversal of 20106564005 is 50046560102.

It is not a de Polignac number, because 20106564005 - 2² = 20106564001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106564001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40775 + ... + 204635.

It is an arithmetic number, because the mean of its divisors is an integer number (867157704).

Almost surely, 2^20106564005 is an apocalyptic number.

It is an amenable number.

20106564005 is a deficient number, since it is larger than the sum of its proper divisors (7642482523).

20106564005 is a wasteful number, since it uses less digits than its factorization.

20106564005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163997.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 20106564005 in words is "twenty billion, one hundred six million, five hundred sixty-four thousand, five".