11898355866 has 16 divisors (see below), whose sum is σ = 23800406688. Its totient is φ = 3965502800.

The previous prime is 11898355853. The next prime is 11898355873. The reversal of 11898355866 is 66855389811.

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, 111180 + ... + 190151.

It is an arithmetic number, because the mean of its divisors is an integer number (1487525418).

Almost surely, 2^11898355866 is an apocalyptic number.

11898355866 is an abundant number, since it is smaller than the sum of its proper divisors (11902050822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11898355866 is a wasteful number, since it uses less digits than its factorization.

11898355866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307917.

The product of its digits is 12441600, while the sum is 60.

The spelling of 11898355866 in words is "eleven billion, eight hundred ninety-eight million, three hundred fifty-five thousand, eight hundred sixty-six".