63534216666205 has 8 divisors (see below), whose sum is σ = 76390845975000. Its totient is φ = 50727516015936.

The previous prime is 63534216666191. The next prime is 63534216666209. The reversal of 63534216666205 is 50266661243536.

It can be written as a sum of positive squares in 4 ways, for example, as 29884437155556 + 33649779510649 = 5466666^2 + 5800843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63534216666205 - 2¹¹ = 63534216664157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63534216666209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12482161830 + ... + 12482166919.

It is an arithmetic number, because the mean of its divisors is an integer number (9548855746875).

Almost surely, 2^{63534216666205} is an apocalyptic number.

It is an amenable number.

63534216666205 is a deficient number, since it is larger than the sum of its proper divisors (12856629308795).

63534216666205 is a wasteful number, since it uses less digits than its factorization.

63534216666205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24964329263.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 63534216666205 in words is "sixty-three trillion, five hundred thirty-four billion, two hundred sixteen million, six hundred sixty-six thousand, two hundred five".