11166491659 has 4 divisors (see below), whose sum is σ = 11202864904. Its totient is φ = 11130118416.

The previous prime is 11166491641. The next prime is 11166491671. The reversal of 11166491659 is 95619466111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95619466111 = 13 ⋅7355343547.

It is a cyclic number.

It is not a de Polignac number, because 11166491659 - 2¹¹ = 11166489611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11166491629) 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, 18186162 + ... + 18186775.

It is an arithmetic number, because the mean of its divisors is an integer number (2800716226).

Almost surely, 2^11166491659 is an apocalyptic number.

11166491659 is a deficient number, since it is larger than the sum of its proper divisors (36373245).

11166491659 is an equidigital number, since it uses as much as digits as its factorization.

11166491659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36373244.

The product of its digits is 349920, while the sum is 49.

The spelling of 11166491659 in words is "eleven billion, one hundred sixty-six million, four hundred ninety-one thousand, six hundred fifty-nine".