11685780830 has 8 divisors (see below), whose sum is σ = 21034405512. Its totient is φ = 4674312328.

The previous prime is 11685780829. The next prime is 11685780853. The reversal of 11685780830 is 3808758611.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584289032 + ... + 584289051.

It is an arithmetic number, because the mean of its divisors is an integer number (2629300689).

Almost surely, 2^11685780830 is an apocalyptic number.

11685780830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11685780830 is a deficient number, since it is larger than the sum of its proper divisors (9348624682).

11685780830 is a wasteful number, since it uses less digits than its factorization.

11685780830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168578090.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 11685780830 in words is "eleven billion, six hundred eighty-five million, seven hundred eighty thousand, eight hundred thirty".