1253706717457 has 2 divisors, whose sum is σ = 1253706717458. Its totient is φ = 1253706717456.

The previous prime is 1253706717449. The next prime is 1253706717493. The reversal of 1253706717457 is 7547176073521.

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., 1133381676816 + 120325040641 = 1064604^2 + 346879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253706717457 - 2³ = 1253706717449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1253706717398 and 1253706717407.

It is not a weakly prime, because it can be changed into another prime (1253706717427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626853358728 + 626853358729.

It is an arithmetic number, because the mean of its divisors is an integer number (626853358729).

Almost surely, 2^{1253706717457} is an apocalyptic number.

It is an amenable number.

1253706717457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253706717457 is an equidigital number, since it uses as much as digits as its factorization.

1253706717457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8643600, while the sum is 55.

The spelling of 1253706717457 in words is "one trillion, two hundred fifty-three billion, seven hundred six million, seven hundred seventeen thousand, four hundred fifty-seven".