115636566109 has 4 divisors (see below), whose sum is σ = 115658951104. Its totient is φ = 115614181116.

The previous prime is 115636566103. The next prime is 115636566151. The reversal of 115636566109 is 901665636511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115636566109 - 2⁷ = 115636565981 is a prime.

It is a super-2 number, since 2×115636566109² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115636566103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11184747 + ... + 11195080.

It is an arithmetic number, because the mean of its divisors is an integer number (28914737776).

Almost surely, 2^115636566109 is an apocalyptic number.

It is an amenable number.

115636566109 is a deficient number, since it is larger than the sum of its proper divisors (22384995).

115636566109 is an equidigital number, since it uses as much as digits as its factorization.

115636566109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22384994.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 115636566109 in words is "one hundred fifteen billion, six hundred thirty-six million, five hundred sixty-six thousand, one hundred nine".