12989961510516 has 144 divisors (see below), whose sum is σ = 34706083339200. Its totient is φ = 4085237431296.

The previous prime is 12989961510509. The next prime is 12989961510521. The reversal of 12989961510516 is 61501516998921.

12989961510516 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 9 + 9 + 61 + 51 + 0 + 516 = 666.

12989961510516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 403361271 + ... + 403393473.

Almost surely, 2^{12989961510516} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12989961510516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17353041669600).

12989961510516 is an abundant number, since it is smaller than the sum of its proper divisors (21716121828684).

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

12989961510516 is a wasteful number, since it uses less digits than its factorization.

12989961510516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34638 (or 34633 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 63.

The spelling of 12989961510516 in words is "twelve trillion, nine hundred eighty-nine billion, nine hundred sixty-one million, five hundred ten thousand, five hundred sixteen".