11776843555 has 4 divisors (see below), whose sum is σ = 14132212272. Its totient is φ = 9421474840.

The previous prime is 11776843499. The next prime is 11776843577. The reversal of 11776843555 is 55534867711.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11776843555 - 2¹⁹ = 11776319267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177684351 + ... + 1177684360.

It is an arithmetic number, because the mean of its divisors is an integer number (3533053068).

Almost surely, 2^11776843555 is an apocalyptic number.

11776843555 is a deficient number, since it is larger than the sum of its proper divisors (2355368717).

11776843555 is an equidigital number, since it uses as much as digits as its factorization.

11776843555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355368716.

The product of its digits is 3528000, while the sum is 52.

The spelling of 11776843555 in words is "eleven billion, seven hundred seventy-six million, eight hundred forty-three thousand, five hundred fifty-five".