12989496276 has 18 divisors (see below), whose sum is σ = 32834560122. Its totient is φ = 4329832080.

The previous prime is 12989496271. The next prime is 12989496277. The reversal of 12989496276 is 67269498921.

It can be written as a sum of positive squares in only one way, i.e., 12954992400 + 34503876 = 113820^2 + 5874^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12989496271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180409635 + ... + 180409706.

It is an arithmetic number, because the mean of its divisors is an integer number (1824142229).

Almost surely, 2^12989496276 is an apocalyptic number.

It is an amenable number.

12989496276 is an abundant number, since it is smaller than the sum of its proper divisors (19845063846).

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

12989496276 is a wasteful number, since it uses less digits than its factorization.

12989496276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360819351 (or 360819346 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 12989496276 in words is "twelve billion, nine hundred eighty-nine million, four hundred ninety-six thousand, two hundred seventy-six".