513242133491 has 2 divisors, whose sum is σ = 513242133492. Its totient is φ = 513242133490.

The previous prime is 513242133431. The next prime is 513242133581. The reversal of 513242133491 is 194331242315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513242133491 - 2¹⁰ = 513242132467 is a prime.

It is not a weakly prime, because it can be changed into another prime (513242133431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256621066745 + 256621066746.

It is an arithmetic number, because the mean of its divisors is an integer number (256621066746).

Almost surely, 2^513242133491 is an apocalyptic number.

513242133491 is a deficient number, since it is larger than the sum of its proper divisors (1).

513242133491 is an equidigital number, since it uses as much as digits as its factorization.

513242133491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The spelling of 513242133491 in words is "five hundred thirteen billion, two hundred forty-two million, one hundred thirty-three thousand, four hundred ninety-one".