11727888945 has 16 divisors (see below), whose sum is σ = 19580476032. Its totient is φ = 5982922880.

The previous prime is 11727888881. The next prime is 11727888971. The reversal of 11727888945 is 54988872711.

It is not a de Polignac number, because 11727888945 - 2⁶ = 11727888881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16996596 + ... + 16997285.

It is an arithmetic number, because the mean of its divisors is an integer number (1223779752).

Almost surely, 2^11727888945 is an apocalyptic number.

11727888945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11727888945 is a deficient number, since it is larger than the sum of its proper divisors (7852587087).

11727888945 is a wasteful number, since it uses less digits than its factorization.

11727888945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33993912.

The product of its digits is 9031680, while the sum is 60.

The spelling of 11727888945 in words is "eleven billion, seven hundred twenty-seven million, eight hundred eighty-eight thousand, nine hundred forty-five".