11378970209 has 4 divisors (see below), whose sum is σ = 11404656816. Its totient is φ = 11353283604.

The previous prime is 11378970199. The next prime is 11378970227. The reversal of 11378970209 is 90207987311.

11378970209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90207987311 = 13 ⋅6939075947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11378970209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11378970289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12842639 + ... + 12843524.

It is an arithmetic number, because the mean of its divisors is an integer number (2851164204).

Almost surely, 2^11378970209 is an apocalyptic number.

It is an amenable number.

11378970209 is a deficient number, since it is larger than the sum of its proper divisors (25686607).

11378970209 is an equidigital number, since it uses as much as digits as its factorization.

11378970209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25686606.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 11378970209 in words is "eleven billion, three hundred seventy-eight million, nine hundred seventy thousand, two hundred nine".