11209491206 has 8 divisors (see below), whose sum is σ = 17205265704. Its totient is φ = 5474402640.

The previous prime is 11209491197. The next prime is 11209491239. The reversal of 11209491206 is 60219490211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 65171375 + ... + 65171546.

It is an arithmetic number, because the mean of its divisors is an integer number (2150658213).

Almost surely, 2^11209491206 is an apocalyptic number.

11209491206 is a deficient number, since it is larger than the sum of its proper divisors (5995774498).

11209491206 is a wasteful number, since it uses less digits than its factorization.

11209491206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130342966.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 11209491206 in words is "eleven billion, two hundred nine million, four hundred ninety-one thousand, two hundred six".