11344178209 has 48 divisors (see below), whose sum is σ = 15001761600. Its totient is φ = 8479126656.

The previous prime is 11344178203. The next prime is 11344178233. The reversal of 11344178209 is 90287144311.

It is not a de Polignac number, because 11344178209 - 2³ = 11344178201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11344178201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5070039 + ... + 5072275.

It is an arithmetic number, because the mean of its divisors is an integer number (312536700).

Almost surely, 2^11344178209 is an apocalyptic number.

11344178209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11344178209 is a deficient number, since it is larger than the sum of its proper divisors (3657583391).

11344178209 is a wasteful number, since it uses less digits than its factorization.

11344178209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 11344178209 in words is "eleven billion, three hundred forty-four million, one hundred seventy-eight thousand, two hundred nine".