11913658166 has 4 divisors (see below), whose sum is σ = 17870487252. Its totient is φ = 5956829082.

The previous prime is 11913658153. The next prime is 11913658199. The reversal of 11913658166 is 66185631911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11913658166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2978414540 + ... + 2978414543.

It is an arithmetic number, because the mean of its divisors is an integer number (4467621813).

Almost surely, 2^11913658166 is an apocalyptic number.

11913658166 is a deficient number, since it is larger than the sum of its proper divisors (5956829086).

11913658166 is an equidigital number, since it uses as much as digits as its factorization.

11913658166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956829085.

The product of its digits is 233280, while the sum is 47.

The spelling of 11913658166 in words is "eleven billion, nine hundred thirteen million, six hundred fifty-eight thousand, one hundred sixty-six".