63209984563 has 16 divisors (see below), whose sum is σ = 70634526336. Its totient is φ = 56067963840.

The previous prime is 63209984561. The next prime is 63209984569. The reversal of 63209984563 is 36548990236.

It is a cyclic number.

It is not a de Polignac number, because 63209984563 - 2¹ = 63209984561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63209984561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380656 + ... + 520882.

It is an arithmetic number, because the mean of its divisors is an integer number (4414657896).

Almost surely, 2^63209984563 is an apocalyptic number.

63209984563 is a deficient number, since it is larger than the sum of its proper divisors (7424541773).

63209984563 is a wasteful number, since it uses less digits than its factorization.

63209984563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141234.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 63209984563 in words is "sixty-three billion, two hundred nine million, nine hundred eighty-four thousand, five hundred sixty-three".