109931727109 has 2 divisors, whose sum is σ = 109931727110. Its totient is φ = 109931727108.

The previous prime is 109931727091. The next prime is 109931727137. The reversal of 109931727109 is 901727139901.

Together with previous prime (109931727091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109492824609 + 438902500 = 330897^2 + 20950^2 .

It is a cyclic number.

It is not a de Polignac number, because 109931727109 - 2¹⁷ = 109931596037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109931727209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54965863554 + 54965863555.

It is an arithmetic number, because the mean of its divisors is an integer number (54965863555).

Almost surely, 2^109931727109 is an apocalyptic number.

It is an amenable number.

109931727109 is a deficient number, since it is larger than the sum of its proper divisors (1).

109931727109 is an equidigital number, since it uses as much as digits as its factorization.

109931727109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 49.

The spelling of 109931727109 in words is "one hundred nine billion, nine hundred thirty-one million, seven hundred twenty-seven thousand, one hundred nine".