11665994277 has 16 divisors (see below), whose sum is σ = 17779644032. Its totient is φ = 6665198400.

The previous prime is 11665994237. The next prime is 11665994279. The reversal of 11665994277 is 77249956611.

It is a happy number.

It is not a de Polignac number, because 11665994277 - 2¹⁴ = 11665977893 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 (11665994279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97527 + ... + 181227.

It is an arithmetic number, because the mean of its divisors is an integer number (1111227752).

Almost surely, 2^11665994277 is an apocalyptic number.

It is an amenable number.

11665994277 is a deficient number, since it is larger than the sum of its proper divisors (6113649755).

11665994277 is an equidigital number, since it uses as much as digits as its factorization.

11665994277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90348.

The product of its digits is 5715360, while the sum is 57.

The spelling of 11665994277 in words is "eleven billion, six hundred sixty-five million, nine hundred ninety-four thousand, two hundred seventy-seven".