11019016609 has 4 divisors (see below), whose sum is σ = 11169962116. Its totient is φ = 10868071104.

The previous prime is 11019016601. The next prime is 11019016691. The reversal of 11019016609 is 90661091011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90661091011 = 19 ⋅4771636369.

It can be written as a sum of positive squares in 2 ways, for example, as 7425613584 + 3593403025 = 86172^2 + 59945^2 .

It is a cyclic number.

It is not a de Polignac number, because 11019016609 - 2³ = 11019016601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11019016601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75472644 + ... + 75472789.

It is an arithmetic number, because the mean of its divisors is an integer number (2792490529).

Almost surely, 2^11019016609 is an apocalyptic number.

It is an amenable number.

11019016609 is a deficient number, since it is larger than the sum of its proper divisors (150945507).

11019016609 is an equidigital number, since it uses as much as digits as its factorization.

11019016609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150945506.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 11019016609 in words is "eleven billion, nineteen million, sixteen thousand, six hundred nine".