12789419643 has 96 divisors (see below), whose sum is σ = 25633036800. Its totient is φ = 6132646080.

The previous prime is 12789419597. The next prime is 12789419653. The reversal of 12789419643 is 34691498721.

It is not a de Polignac number, because 12789419643 - 2⁶ = 12789419579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12789419643.

It is not an unprimeable number, because it can be changed into a prime (12789419653) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 275788 + ... + 318806.

It is an arithmetic number, because the mean of its divisors is an integer number (267010800).

Almost surely, 2^12789419643 is an apocalyptic number.

12789419643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12789419643 is an abundant number, since it is smaller than the sum of its proper divisors (12843617157).

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

12789419643 is a wasteful number, since it uses less digits than its factorization.

12789419643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43070 (or 43053 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 12789419643 in words is "twelve billion, seven hundred eighty-nine million, four hundred nineteen thousand, six hundred forty-three".