11956085655 has 16 divisors (see below), whose sum is σ = 19326953184. Its totient is φ = 6310840320.

The previous prime is 11956085639. The next prime is 11956085681. The reversal of 11956085655 is 55658065911.

It is a happy number.

11956085655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11956085655 - 2⁴ = 11956085639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11956085598 and 11956085607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4107166 + ... + 4110075.

It is an arithmetic number, because the mean of its divisors is an integer number (1207934574).

Almost surely, 2^11956085655 is an apocalyptic number.

11956085655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11956085655 is a deficient number, since it is larger than the sum of its proper divisors (7370867529).

11956085655 is an equidigital number, since it uses as much as digits as its factorization.

11956085655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217346.

The product of its (nonzero) digits is 1620000, while the sum is 51.

The spelling of 11956085655 in words is "eleven billion, nine hundred fifty-six million, eighty-five thousand, six hundred fifty-five".