513497501563 has 2 divisors, whose sum is σ = 513497501564. Its totient is φ = 513497501562.

The previous prime is 513497501527. The next prime is 513497501591. The reversal of 513497501563 is 365105794315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513497501563 is a prime.

It is a super-2 number, since 2×513497501563² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513497501663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256748750781 + 256748750782.

It is an arithmetic number, because the mean of its divisors is an integer number (256748750782).

Almost surely, 2^513497501563 is an apocalyptic number.

513497501563 is a deficient number, since it is larger than the sum of its proper divisors (1).

513497501563 is an equidigital number, since it uses as much as digits as its factorization.

513497501563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 513497501563 in words is "five hundred thirteen billion, four hundred ninety-seven million, five hundred one thousand, five hundred sixty-three".