12946890129 has 4 divisors (see below), whose sum is σ = 17262520176. Its totient is φ = 8631260084.

The previous prime is 12946890101. The next prime is 12946890133. The reversal of 12946890129 is 92109864921.

12946890129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92109864921 = 3 ⋅30703288307.

It is a cyclic number.

It is not a de Polignac number, because 12946890129 - 2¹⁹ = 12946365841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12946890029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157815019 + ... + 2157815024.

It is an arithmetic number, because the mean of its divisors is an integer number (4315630044).

Almost surely, 2^12946890129 is an apocalyptic number.

It is an amenable number.

12946890129 is a deficient number, since it is larger than the sum of its proper divisors (4315630047).

12946890129 is an equidigital number, since it uses as much as digits as its factorization.

12946890129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315630046.

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 12946890129 in words is "twelve billion, nine hundred forty-six million, eight hundred ninety thousand, one hundred twenty-nine".