12783895664 has 20 divisors (see below), whose sum is σ = 24799439520. Its totient is φ = 6384040320.

The previous prime is 12783895651. The next prime is 12783895669. The reversal of 12783895664 is 46659838721.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12783895669) 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, 480872 + ... + 506759.

It is an arithmetic number, because the mean of its divisors is an integer number (1239971976).

Almost surely, 2^12783895664 is an apocalyptic number.

It is an amenable number.

12783895664 is a deficient number, since it is larger than the sum of its proper divisors (12015543856).

12783895664 is an equidigital number, since it uses as much as digits as its factorization.

12783895664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988448 (or 988442 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The spelling of 12783895664 in words is "twelve billion, seven hundred eighty-three million, eight hundred ninety-five thousand, six hundred sixty-four".