12999791573 has 4 divisors (see below), whose sum is σ = 13001055660. Its totient is φ = 12998527488.

The previous prime is 12999791551. The next prime is 12999791579. The reversal of 12999791573 is 37519799921.

12999791573 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 an emirpimes, since its reverse is a distinct semiprime: 37519799921 = 15527 ⋅2416423.

It can be written as a sum of positive squares in 2 ways, for example, as 1439671249 + 11560120324 = 37943^2 + 107518^2 .

It is a cyclic number.

It is not a de Polignac number, because 12999791573 - 2⁶ = 12999791509 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 (12999791579) 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, 616490 + ... + 637227.

It is an arithmetic number, because the mean of its divisors is an integer number (3250263915).

Almost surely, 2^12999791573 is an apocalyptic number.

It is an amenable number.

12999791573 is a deficient number, since it is larger than the sum of its proper divisors (1264087).

12999791573 is a wasteful number, since it uses less digits than its factorization.

12999791573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264086.

The product of its digits is 9644670, while the sum is 62.

The spelling of 12999791573 in words is "twelve billion, nine hundred ninety-nine million, seven hundred ninety-one thousand, five hundred seventy-three".