11657388711 has 4 divisors (see below), whose sum is σ = 15543184952. Its totient is φ = 7771592472.

The previous prime is 11657388697. The next prime is 11657388719. The reversal of 11657388711 is 11788375611.

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

It is not a de Polignac number, because 11657388711 - 2⁵ = 11657388679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657388719) by changing a digit.

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, 1942898116 + ... + 1942898121.

It is an arithmetic number, because the mean of its divisors is an integer number (3885796238).

Almost surely, 2^11657388711 is an apocalyptic number.

11657388711 is a deficient number, since it is larger than the sum of its proper divisors (3885796241).

11657388711 is an equidigital number, since it uses as much as digits as its factorization.

11657388711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885796240.

The product of its digits is 282240, while the sum is 48.

The spelling of 11657388711 in words is "eleven billion, six hundred fifty-seven million, three hundred eighty-eight thousand, seven hundred eleven".