12642741193 has 2 divisors, whose sum is σ = 12642741194. Its totient is φ = 12642741192.

The previous prime is 12642741149. The next prime is 12642741229. The reversal of 12642741193 is 39114724621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9183772224 + 3458968969 = 95832^2 + 58813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12642741193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12642241193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321370596 + 6321370597.

It is an arithmetic number, because the mean of its divisors is an integer number (6321370597).

Almost surely, 2^12642741193 is an apocalyptic number.

It is an amenable number.

12642741193 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642741193 is an equidigital number, since it uses as much as digits as its factorization.

12642741193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The spelling of 12642741193 in words is "twelve billion, six hundred forty-two million, seven hundred forty-one thousand, one hundred ninety-three".