11856551273 has 8 divisors (see below), whose sum is σ = 13772481600. Its totient is φ = 9996155280.

The previous prime is 11856551261. The next prime is 11856551279. The reversal of 11856551273 is 37215565811.

11856551273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11856551273 - 2¹⁶ = 11856485737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11856551279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13883123 + ... + 13883976.

It is an arithmetic number, because the mean of its divisors is an integer number (1721560200).

Almost surely, 2^11856551273 is an apocalyptic number.

It is an amenable number.

11856551273 is a deficient number, since it is larger than the sum of its proper divisors (1915930327).

11856551273 is an equidigital number, since it uses as much as digits as its factorization.

11856551273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27767167.

The product of its digits is 252000, while the sum is 44.

The spelling of 11856551273 in words is "eleven billion, eight hundred fifty-six million, five hundred fifty-one thousand, two hundred seventy-three".