513203460491 has 2 divisors, whose sum is σ = 513203460492. Its totient is φ = 513203460490.

The previous prime is 513203460449. The next prime is 513203460503. The reversal of 513203460491 is 194064302315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513203460491 - 2²⁶ = 513136351627 is a prime.

It is a super-2 number, since 2×513203460491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513203460431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256601730245 + 256601730246.

It is an arithmetic number, because the mean of its divisors is an integer number (256601730246).

Almost surely, 2^513203460491 is an apocalyptic number.

513203460491 is a deficient number, since it is larger than the sum of its proper divisors (1).

513203460491 is an equidigital number, since it uses as much as digits as its factorization.

513203460491 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 513203460491 in words is "five hundred thirteen billion, two hundred three million, four hundred sixty thousand, four hundred ninety-one".