11770665985 has 8 divisors (see below), whose sum is σ = 15211322280. Its totient is φ = 8692184064.

The previous prime is 11770665979. The next prime is 11770666027. The reversal of 11770665985 is 58956607711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 397723249 + 11372942736 = 19943^2 + 106644^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11770665985 - 2⁷ = 11770665857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90543520 + ... + 90543649.

It is an arithmetic number, because the mean of its divisors is an integer number (1901415285).

Almost surely, 2^11770665985 is an apocalyptic number.

It is an amenable number.

11770665985 is a deficient number, since it is larger than the sum of its proper divisors (3440656295).

11770665985 is a wasteful number, since it uses less digits than its factorization.

11770665985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181087187.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 11770665985 in words is "eleven billion, seven hundred seventy million, six hundred sixty-five thousand, nine hundred eighty-five".