12489454816320 has 224 divisors, whose sum is σ = 39913299578880. Its totient is φ = 3308805642240.

The previous prime is 12489454816271. The next prime is 12489454816351. The reversal of 12489454816320 is 2361845498421.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105053871 + ... + 105172689.

It is an arithmetic number, because the mean of its divisors is an integer number (178184373120).

Almost surely, 2^{12489454816320} is an apocalyptic number.

12489454816320 is a gapful number since it is divisible by the number (10) 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 12489454816320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19956649789440).

12489454816320 is an abundant number, since it is smaller than the sum of its proper divisors (27423844762560).

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

12489454816320 is a wasteful number, since it uses less digits than its factorization.

12489454816320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119553 (or 119543 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 12489454816320 in words is "twelve trillion, four hundred eighty-nine billion, four hundred fifty-four million, eight hundred sixteen thousand, three hundred twenty".