11138106609 has 40 divisors (see below), whose sum is σ = 19024080768. Its totient is φ = 6361701120.

The previous prime is 11138106601. The next prime is 11138106613. The reversal of 11138106609 is 90660183111.

It is a happy number.

11138106609 is a `hidden beast` number, since 1 + 1 + 1 + 38 + 10 + 6 + 609 = 666.

It is not a de Polignac number, because 11138106609 - 2³ = 11138106601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11138106601) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2048124 + ... + 2053554.

Almost surely, 2^11138106609 is an apocalyptic number.

It is an amenable number.

11138106609 is a deficient number, since it is larger than the sum of its proper divisors (7885974159).

11138106609 is an equidigital number, since it uses as much as digits as its factorization.

11138106609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067 (or 9058 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 11138106609 in words is "eleven billion, one hundred thirty-eight million, one hundred six thousand, six hundred nine".