12989082961 has 8 divisors (see below), whose sum is σ = 13237145064. Its totient is φ = 12741131520.

The previous prime is 12989082959. The next prime is 12989083033. The reversal of 12989082961 is 16928098921.

It can be written as a sum of positive squares in 4 ways, for example, as 4970955025 + 8018127936 = 70505^2 + 89544^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12989082961 - 2¹ = 12989082959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12989082901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232425 + ... + 282841.

It is an arithmetic number, because the mean of its divisors is an integer number (1654643133).

Almost surely, 2^12989082961 is an apocalyptic number.

It is an amenable number.

12989082961 is a deficient number, since it is larger than the sum of its proper divisors (248062103).

12989082961 is an equidigital number, since it uses as much as digits as its factorization.

12989082961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55331.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 12989082961 in words is "twelve billion, nine hundred eighty-nine million, eighty-two thousand, nine hundred sixty-one".