12749392693 has 2 divisors, whose sum is σ = 12749392694. Its totient is φ = 12749392692.

The previous prime is 12749392571. The next prime is 12749392727. The reversal of 12749392693 is 39629394721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8717396689 + 4031996004 = 93367^2 + 63498^2 .

It is a cyclic number.

It is not a de Polignac number, because 12749392693 - 2⁹ = 12749392181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12749392393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6374696346 + 6374696347.

It is an arithmetic number, because the mean of its divisors is an integer number (6374696347).

Almost surely, 2^12749392693 is an apocalyptic number.

It is an amenable number.

12749392693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749392693 is an equidigital number, since it uses as much as digits as its factorization.

12749392693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 55.

The spelling of 12749392693 in words is "twelve billion, seven hundred forty-nine million, three hundred ninety-two thousand, six hundred ninety-three".