12789164544 has 80 divisors (see below), whose sum is σ = 36692047392. Its totient is φ = 3935121408.

The previous prime is 12789164543. The next prime is 12789164567. The reversal of 12789164544 is 44546198721.

It is not an unprimeable number, because it can be changed into a prime (12789164543) 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, 300274 + ... + 340209.

Almost surely, 2^12789164544 is an apocalyptic number.

It is an amenable number.

12789164544 is an abundant number, since it is smaller than the sum of its proper divisors (23902882848).

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

12789164544 is an equidigital number, since it uses as much as digits as its factorization.

12789164544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640517 (or 640501 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 12789164544 in words is "twelve billion, seven hundred eighty-nine million, one hundred sixty-four thousand, five hundred forty-four".