63456474516563 has 6 divisors (see below), whose sum is σ = 65217866798196. Its totient is φ = 61741434663432.

The previous prime is 63456474516559. The next prime is 63456474516569. The reversal of 63456474516563 is 36561547465436.

It is not a de Polignac number, because 63456474516563 - 2² = 63456474516559 is a prime.

It is a super-2 number, since 2×63456474516563² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63456474516563.

It is not an unprimeable number, because it can be changed into a prime (63456474516569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23176212845 + ... + 23176215582.

It is an arithmetic number, because the mean of its divisors is an integer number (10869644466366).

Almost surely, 2^{63456474516563} is an apocalyptic number.

63456474516563 is a deficient number, since it is larger than the sum of its proper divisors (1761392281633).

63456474516563 is an equidigital number, since it uses as much as digits as its factorization.

63456474516563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46352428501 (or 46352428464 counting only the distinct ones).

The product of its digits is 653184000, while the sum is 65.

The spelling of 63456474516563 in words is "sixty-three trillion, four hundred fifty-six billion, four hundred seventy-four million, five hundred sixteen thousand, five hundred sixty-three".