999998888866652 has 12 divisors (see below), whose sum is σ = 1797295300260600. Its totient is φ = 486485945935056.

The previous prime is 999998888866651. The next prime is 999998888866741. The reversal of 999998888866652 is 256668888899999.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999998888866651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3378374624402 + ... + 3378374624697.

It is an arithmetic number, because the mean of its divisors is an integer number (149774608355050).

Almost surely, 2^{999998888866652} is an apocalyptic number.

It is an amenable number.

999998888866652 is a deficient number, since it is larger than the sum of its proper divisors (797296411393948).

999998888866652 is a wasteful number, since it uses less digits than its factorization.

999998888866652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756749249140 (or 6756749249138 counting only the distinct ones).

The product of its digits is 4179422085120, while the sum is 110.

The spelling of 999998888866652 in words is "nine hundred ninety-nine trillion, nine hundred ninety-eight billion, eight hundred eighty-eight million, eight hundred sixty-six thousand, six hundred fifty-two".