11161669309 has 4 divisors (see below), whose sum is σ = 12756193504. Its totient is φ = 9567145116.

The previous prime is 11161669271. The next prime is 11161669357. The reversal of 11161669309 is 90396616111.

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.

It is a cyclic number.

It is not a de Polignac number, because 11161669309 - 2¹⁷ = 11161538237 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 (11161669109) 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, 797262087 + ... + 797262100.

It is an arithmetic number, because the mean of its divisors is an integer number (3189048376).

Almost surely, 2^11161669309 is an apocalyptic number.

It is an amenable number.

11161669309 is a deficient number, since it is larger than the sum of its proper divisors (1594524195).

11161669309 is an equidigital number, since it uses as much as digits as its factorization.

11161669309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594524194.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 11161669309 in words is "eleven billion, one hundred sixty-one million, six hundred sixty-nine thousand, three hundred nine".