1253706717493 has 2 divisors, whose sum is σ = 1253706717494. Its totient is φ = 1253706717492.

The previous prime is 1253706717457. The next prime is 1253706717533. The reversal of 1253706717493 is 3947176073521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253698977969 + 7739524 = 1119687^2 + 2782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253706717493 - 2⁹ = 1253706716981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253706717413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626853358746 + 626853358747.

It is an arithmetic number, because the mean of its divisors is an integer number (626853358747).

Almost surely, 2^{1253706717493} is an apocalyptic number.

It is an amenable number.

1253706717493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253706717493 is an equidigital number, since it uses as much as digits as its factorization.

1253706717493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 1253706717493 in words is "one trillion, two hundred fifty-three billion, seven hundred six million, seven hundred seventeen thousand, four hundred ninety-three".