11961855682 has 8 divisors (see below), whose sum is σ = 20506038336. Its totient is φ = 5126509572.

The previous prime is 11961855679. The next prime is 11961855733. The reversal of 11961855682 is 28655816911.

It is a happy number.

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

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, 427209118 + ... + 427209145.

It is an arithmetic number, because the mean of its divisors is an integer number (2563254792).

Almost surely, 2^11961855682 is an apocalyptic number.

11961855682 is a deficient number, since it is larger than the sum of its proper divisors (8544182654).

11961855682 is an equidigital number, since it uses as much as digits as its factorization.

11961855682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854418272.

The product of its digits is 1036800, while the sum is 52.

The spelling of 11961855682 in words is "eleven billion, nine hundred sixty-one million, eight hundred fifty-five thousand, six hundred eighty-two".