20106727109 has 32 divisors (see below), whose sum is σ = 23776146432. Its totient is φ = 16644096000.

The previous prime is 20106727061. The next prime is 20106727111. The reversal of 20106727109 is 90172760102.

It is not a de Polignac number, because 20106727109 - 2¹⁶ = 20106661573 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 (20106727309) 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, 31367429 + ... + 31368069.

It is an arithmetic number, because the mean of its divisors is an integer number (743004576).

Almost surely, 2^20106727109 is an apocalyptic number.

It is an amenable number.

20106727109 is a deficient number, since it is larger than the sum of its proper divisors (3669419323).

20106727109 is a wasteful number, since it uses less digits than its factorization.

20106727109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 20106727109 in words is "twenty billion, one hundred six million, seven hundred twenty-seven thousand, one hundred nine".