11561799207 has 8 divisors (see below), whose sum is σ = 17617979776. Its totient is φ = 6606742392.

The previous prime is 11561799173. The next prime is 11561799209. The reversal of 11561799207 is 70299716511.

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

It is not a de Polignac number, because 11561799207 - 2¹⁹ = 11561274919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561799209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275280913 + ... + 275280954.

It is an arithmetic number, because the mean of its divisors is an integer number (2202247472).

Almost surely, 2^11561799207 is an apocalyptic number.

11561799207 is a deficient number, since it is larger than the sum of its proper divisors (6056180569).

11561799207 is an equidigital number, since it uses as much as digits as its factorization.

11561799207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550561877.

The product of its (nonzero) digits is 238140, while the sum is 48.

The spelling of 11561799207 in words is "eleven billion, five hundred sixty-one million, seven hundred ninety-nine thousand, two hundred seven".