989778241612 has 6 divisors (see below), whose sum is σ = 1732111922828. Its totient is φ = 494889120804.

The previous prime is 989778241601. The next prime is 989778241631. The reversal of 989778241612 is 216142877989.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123722280198 + ... + 123722280205.

Almost surely, 2^989778241612 is an apocalyptic number.

It is an amenable number.

989778241612 is a deficient number, since it is larger than the sum of its proper divisors (742333681216).

989778241612 is a wasteful number, since it uses less digits than its factorization.

989778241612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247444560407 (or 247444560405 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 64.

The spelling of 989778241612 in words is "nine hundred eighty-nine billion, seven hundred seventy-eight million, two hundred forty-one thousand, six hundred twelve".