1313605126643 has 2 divisors, whose sum is σ = 1313605126644. Its totient is φ = 1313605126642.

The previous prime is 1313605126607. The next prime is 1313605126649. The reversal of 1313605126643 is 3466215063131.

It is a strong prime.

It is an emirp because it is prime and its reverse (3466215063131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313605126643 - 2²⁰ = 1313604078067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313605126643.

It is not a weakly prime, because it can be changed into another prime (1313605126649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656802563321 + 656802563322.

It is an arithmetic number, because the mean of its divisors is an integer number (656802563322).

Almost surely, 2^{1313605126643} is an apocalyptic number.

1313605126643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313605126643 is an equidigital number, since it uses as much as digits as its factorization.

1313605126643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 1313605126643 in words is "one trillion, three hundred thirteen billion, six hundred five million, one hundred twenty-six thousand, six hundred forty-three".