11928800891 has 16 divisors (see below), whose sum is σ = 14253055488. Its totient is φ = 9761294400.

The previous prime is 11928800867. The next prime is 11928800909. The reversal of 11928800891 is 19800882911.

11928800891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11928800891 - 2⁶ = 11928800827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11928800291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12776 + ... + 154986.

It is an arithmetic number, because the mean of its divisors is an integer number (890815968).

Almost surely, 2^11928800891 is an apocalyptic number.

11928800891 is a deficient number, since it is larger than the sum of its proper divisors (2324254597).

11928800891 is a wasteful number, since it uses less digits than its factorization.

11928800891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142762.

The product of its (nonzero) digits is 82944, while the sum is 47.

The spelling of 11928800891 in words is "eleven billion, nine hundred twenty-eight million, eight hundred thousand, eight hundred ninety-one".