13315919563 has 2 divisors, whose sum is σ = 13315919564. Its totient is φ = 13315919562.

The previous prime is 13315919527. The next prime is 13315919567. The reversal of 13315919563 is 36591951331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13315919563 is a prime.

It is a super-2 number, since 2×13315919563² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13315919567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6657959781 + 6657959782.

It is an arithmetic number, because the mean of its divisors is an integer number (6657959782).

Almost surely, 2^13315919563 is an apocalyptic number.

13315919563 is a deficient number, since it is larger than the sum of its proper divisors (1).

13315919563 is an equidigital number, since it uses as much as digits as its factorization.

13315919563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 328050, while the sum is 46.

The spelling of 13315919563 in words is "thirteen billion, three hundred fifteen million, nine hundred nineteen thousand, five hundred sixty-three".