11287551136 has 24 divisors (see below), whose sum is σ = 22490110944. Its totient is φ = 5575776960.

The previous prime is 11287551109. The next prime is 11287551137. The reversal of 11287551136 is 63115578211.

It is not an unprimeable number, because it can be changed into a prime (11287551137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122260 + ... + 2127571.

It is an arithmetic number, because the mean of its divisors is an integer number (937087956).

Almost surely, 2^11287551136 is an apocalyptic number.

11287551136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11287551136 is a deficient number, since it is larger than the sum of its proper divisors (11202559808).

11287551136 is an equidigital number, since it uses as much as digits as its factorization.

11287551136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249924 (or 4249916 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The spelling of 11287551136 in words is "eleven billion, two hundred eighty-seven million, five hundred fifty-one thousand, one hundred thirty-six".