489643066368 has 220 divisors, whose sum is σ = 1475861813712. Its totient is φ = 161686056960.

The previous prime is 489643066349. The next prime is 489643066391. The reversal of 489643066368 is 863660346984.

489643066368 is a `hidden beast` number, since 4 + 89 + 6 + 430 + 6 + 63 + 68 = 666.

It is a super-2 number, since 2×489643066368² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8847423 + ... + 8902593.

Almost surely, 2^489643066368 is an apocalyptic number.

489643066368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489643066368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737930906856).

489643066368 is an abundant number, since it is smaller than the sum of its proper divisors (986218747344).

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

489643066368 is a wasteful number, since it uses less digits than its factorization.

489643066368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55310 (or 55283 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 63.

The spelling of 489643066368 in words is "four hundred eighty-nine billion, six hundred forty-three million, sixty-six thousand, three hundred sixty-eight".