12578901589 has 4 divisors (see below), whose sum is σ = 12984672640. Its totient is φ = 12173130540.

The previous prime is 12578901523. The next prime is 12578901611. The reversal of 12578901589 is 98510987521.

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.

It is a cyclic number.

It is not a de Polignac number, because 12578901589 - 2¹⁵ = 12578868821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578901289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202885479 + ... + 202885540.

It is an arithmetic number, because the mean of its divisors is an integer number (3246168160).

Almost surely, 2^12578901589 is an apocalyptic number.

It is an amenable number.

12578901589 is a deficient number, since it is larger than the sum of its proper divisors (405771051).

12578901589 is an equidigital number, since it uses as much as digits as its factorization.

12578901589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405771050.

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 12578901589 in words is "twelve billion, five hundred seventy-eight million, nine hundred one thousand, five hundred eighty-nine".