11421288868 has 24 divisors (see below), whose sum is σ = 22020171264. Its totient is φ = 5140092000.

The previous prime is 11421288859. The next prime is 11421288877. The reversal of 11421288868 is 86888212411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11421288859) and next prime (11421288877).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1280580 + ... + 1289467.

It is an arithmetic number, because the mean of its divisors is an integer number (917507136).

Almost surely, 2^11421288868 is an apocalyptic number.

It is an amenable number.

11421288868 is a deficient number, since it is larger than the sum of its proper divisors (10598882396).

11421288868 is a wasteful number, since it uses less digits than its factorization.

11421288868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570163 (or 2570161 counting only the distinct ones).

The product of its digits is 393216, while the sum is 49.

The spelling of 11421288868 in words is "eleven billion, four hundred twenty-one million, two hundred eighty-eight thousand, eight hundred sixty-eight".