12893697493 has 2 divisors, whose sum is σ = 12893697494. Its totient is φ = 12893697492.

The previous prime is 12893697457. The next prime is 12893697517. The reversal of 12893697493 is 39479639821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8132973489 + 4760724004 = 90183^2 + 68998^2 .

It is an emirp because it is prime and its reverse (39479639821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12893697493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12893697403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446848746 + 6446848747.

It is an arithmetic number, because the mean of its divisors is an integer number (6446848747).

Almost surely, 2^12893697493 is an apocalyptic number.

It is an amenable number.

12893697493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893697493 is an equidigital number, since it uses as much as digits as its factorization.

12893697493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 61.

The spelling of 12893697493 in words is "twelve billion, eight hundred ninety-three million, six hundred ninety-seven thousand, four hundred ninety-three".