12793440193 has 2 divisors, whose sum is σ = 12793440194. Its totient is φ = 12793440192.

The previous prime is 12793440181. The next prime is 12793440227. The reversal of 12793440193 is 39104439721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6825568689 + 5967871504 = 82617^2 + 77252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12793440193 is a prime.

It is a super-2 number, since 2×12793440193² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12793440173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6396720096 + 6396720097.

It is an arithmetic number, because the mean of its divisors is an integer number (6396720097).

Almost surely, 2^12793440193 is an apocalyptic number.

It is an amenable number.

12793440193 is a deficient number, since it is larger than the sum of its proper divisors (1).

12793440193 is an equidigital number, since it uses as much as digits as its factorization.

12793440193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 12793440193 in words is "twelve billion, seven hundred ninety-three million, four hundred forty thousand, one hundred ninety-three".