489144897888 has 48 divisors (see below), whose sum is σ = 1287684543600. Its totient is φ = 162581101056.

The previous prime is 489144897881. The next prime is 489144897907. The reversal of 489144897888 is 888798441984.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×489144897888² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489144897881) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7266295 + ... + 7333302.

It is an arithmetic number, because the mean of its divisors is an integer number (26826761325).

Almost surely, 2^489144897888 is an apocalyptic number.

489144897888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

489144897888 is an abundant number, since it is smaller than the sum of its proper divisors (798539645712).

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

489144897888 is a wasteful number, since it uses less digits than its factorization.

489144897888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14599959 (or 14599951 counting only the distinct ones).

The product of its digits is 1189085184, while the sum is 78.

The spelling of 489144897888 in words is "four hundred eighty-nine billion, one hundred forty-four million, eight hundred ninety-seven thousand, eight hundred eighty-eight".