12989950488 has 144 divisors (see below), whose sum is σ = 37386825840. Its totient is φ = 4073097600.

The previous prime is 12989950469. The next prime is 12989950489. The reversal of 12989950488 is 88405998921.

12989950488 is a `hidden beast` number, since 1 + 29 + 89 + 9 + 50 + 488 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12989950489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2320573 + ... + 2326163.

It is an arithmetic number, because the mean of its divisors is an integer number (259630735).

Almost surely, 2^12989950488 is an apocalyptic number.

12989950488 is a gapful number since it is divisible by the number (18) 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 12989950488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18693412920).

12989950488 is an abundant number, since it is smaller than the sum of its proper divisors (24396875352).

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

12989950488 is a wasteful number, since it uses less digits than its factorization.

12989950488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710 (or 5680 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 12989950488 in words is "twelve billion, nine hundred eighty-nine million, nine hundred fifty thousand, four hundred eighty-eight".