12972996793 has 4 divisors (see below), whose sum is σ = 13420341540. Its totient is φ = 12525652048.

The previous prime is 12972996791. The next prime is 12972996847. The reversal of 12972996793 is 39769927921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39769927921 = 78721 ⋅505201.

It can be written as a sum of positive squares in 2 ways, for example, as 11074826169 + 1898170624 = 105237^2 + 43568^2 .

It is a cyclic number.

It is not a de Polignac number, because 12972996793 - 2¹ = 12972996791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12972996791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223672330 + ... + 223672387.

It is an arithmetic number, because the mean of its divisors is an integer number (3355085385).

Almost surely, 2^12972996793 is an apocalyptic number.

It is an amenable number.

12972996793 is a deficient number, since it is larger than the sum of its proper divisors (447344747).

12972996793 is an equidigital number, since it uses as much as digits as its factorization.

12972996793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447344746.

The product of its digits is 23147208, while the sum is 64.

The spelling of 12972996793 in words is "twelve billion, nine hundred seventy-two million, nine hundred ninety-six thousand, seven hundred ninety-three".