11280168868 has 12 divisors (see below), whose sum is σ = 19747516572. Its totient is φ = 5638021280.

The previous prime is 11280168859. The next prime is 11280168883. The reversal of 11280168868 is 86886108211.

It can be written as a sum of positive squares in 2 ways, for example, as 3783726144 + 7496442724 = 61512^2 + 86582^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503455 + ... + 525382.

It is an arithmetic number, because the mean of its divisors is an integer number (1645626381).

Almost surely, 2^11280168868 is an apocalyptic number.

It is an amenable number.

11280168868 is a deficient number, since it is larger than the sum of its proper divisors (8467347704).

11280168868 is a wasteful number, since it uses less digits than its factorization.

11280168868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031582 (or 1031580 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 49.

The spelling of 11280168868 in words is "eleven billion, two hundred eighty million, one hundred sixty-eight thousand, eight hundred sixty-eight".