11100508109 has 2 divisors, whose sum is σ = 11100508110. Its totient is φ = 11100508108.

The previous prime is 11100508103. The next prime is 11100508157. The reversal of 11100508109 is 90180500111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10785445609 + 315062500 = 103853^2 + 17750^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100508109 - 2⁸ = 11100507853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100508103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550254054 + 5550254055.

It is an arithmetic number, because the mean of its divisors is an integer number (5550254055).

Almost surely, 2^11100508109 is an apocalyptic number.

It is an amenable number.

11100508109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100508109 is an equidigital number, since it uses as much as digits as its factorization.

11100508109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 11100508109 in words is "eleven billion, one hundred million, five hundred eight thousand, one hundred nine".