13611909009 has 16 divisors (see below), whose sum is σ = 18751094784. Its totient is φ = 8774178000.

The previous prime is 13611908957. The next prime is 13611909029. The reversal of 13611909009 is 90090911631.

It is a happy number.

It is not a de Polignac number, because 13611909009 - 2¹¹ = 13611906961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13611909029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43462 + ... + 170624.

It is an arithmetic number, because the mean of its divisors is an integer number (1171943424).

Almost surely, 2^13611909009 is an apocalyptic number.

It is an amenable number.

13611909009 is a deficient number, since it is larger than the sum of its proper divisors (5139185775).

13611909009 is a wasteful number, since it uses less digits than its factorization.

13611909009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128348.

The product of its (nonzero) digits is 13122, while the sum is 39.

The spelling of 13611909009 in words is "thirteen billion, six hundred eleven million, nine hundred nine thousand, nine".