11728618544347 has 4 divisors (see below), whose sum is σ = 11729982504400. Its totient is φ = 11727254584296.

The previous prime is 11728618544341. The next prime is 11728618544389. The reversal of 11728618544347 is 74344581682711.

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

It is a cyclic number.

It is not a de Polignac number, because 11728618544347 - 2³ = 11728618544339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11728618544341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681967128 + ... + 681984325.

It is an arithmetic number, because the mean of its divisors is an integer number (2932495626100).

Almost surely, 2^{11728618544347} is an apocalyptic number.

11728618544347 is a deficient number, since it is larger than the sum of its proper divisors (1363960053).

11728618544347 is an equidigital number, since it uses as much as digits as its factorization.

11728618544347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363960052.

The product of its digits is 36126720, while the sum is 61.

The spelling of 11728618544347 in words is "eleven trillion, seven hundred twenty-eight billion, six hundred eighteen million, five hundred forty-four thousand, three hundred forty-seven".