11287928811 has 8 divisors (see below), whose sum is σ = 15142907200. Its totient is φ = 7479118152.

The previous prime is 11287928797. The next prime is 11287928837. The reversal of 11287928811 is 11882978211.

11287928811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11287928811 - 2¹⁸ = 11287666667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11287928851) 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 7 ways as a sum of consecutive naturals, for example, 11541361 + ... + 11542338.

It is an arithmetic number, because the mean of its divisors is an integer number (1892863400).

Almost surely, 2^11287928811 is an apocalyptic number.

11287928811 is a deficient number, since it is larger than the sum of its proper divisors (3854978389).

11287928811 is a wasteful number, since it uses less digits than its factorization.

11287928811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083865.

The product of its digits is 129024, while the sum is 48.

The spelling of 11287928811 in words is "eleven billion, two hundred eighty-seven million, nine hundred twenty-eight thousand, eight hundred eleven".