1313425005491 has 2 divisors, whose sum is σ = 1313425005492. Its totient is φ = 1313425005490.

The previous prime is 1313425005461. The next prime is 1313425005533. The reversal of 1313425005491 is 1945005243131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313425005491 - 2⁶ = 1313425005427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313425005461) 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, 656712502745 + 656712502746.

It is an arithmetic number, because the mean of its divisors is an integer number (656712502746).

Almost surely, 2^{1313425005491} is an apocalyptic number.

1313425005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313425005491 is an equidigital number, since it uses as much as digits as its factorization.

1313425005491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 1313425005491 in words is "one trillion, three hundred thirteen billion, four hundred twenty-five million, five thousand, four hundred ninety-one".