12489647040 has 896 divisors, whose sum is σ = 52107632640. Its totient is φ = 2786918400.

The previous prime is 12489647029. The next prime is 12489647041. The reversal of 12489647040 is 4074698421.

12489647040 is a `hidden beast` number, since 1 + 2 + 489 + 64 + 70 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489647041) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 59192535 + ... + 59192745.

It is an arithmetic number, because the mean of its divisors is an integer number (58155840).

Almost surely, 2^12489647040 is an apocalyptic number.

12489647040 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 12489647040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26053816320).

12489647040 is an abundant number, since it is smaller than the sum of its proper divisors (39617985600).

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

12489647040 is a wasteful number, since it uses less digits than its factorization.

12489647040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 12489647040 in words is "twelve billion, four hundred eighty-nine million, six hundred forty-seven thousand, forty".