11928863111 has 16 divisors (see below), whose sum is σ = 13249457280. Its totient is φ = 10648656480.

The previous prime is 11928863087. The next prime is 11928863131. The reversal of 11928863111 is 11136882911.

It is a happy number.

It is not a de Polignac number, because 11928863111 - 2¹⁰ = 11928862087 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 (11928863131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208100 + ... + 259158.

It is an arithmetic number, because the mean of its divisors is an integer number (828091080).

Almost surely, 2^11928863111 is an apocalyptic number.

11928863111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11928863111 is a deficient number, since it is larger than the sum of its proper divisors (1320594169).

11928863111 is a wasteful number, since it uses less digits than its factorization.

11928863111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51454.

The product of its digits is 20736, while the sum is 41.

The spelling of 11928863111 in words is "eleven billion, nine hundred twenty-eight million, eight hundred sixty-three thousand, one hundred eleven".