63518222768 has 320 divisors, whose sum is σ = 171802337280. Its totient is φ = 22077619200.

The previous prime is 63518222767. The next prime is 63518222809. The reversal of 63518222768 is 86722281536.

It is not an unprimeable number, because it can be changed into a prime (63518222767) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83907446 + ... + 83908202.

It is an arithmetic number, because the mean of its divisors is an integer number (536882304).

Almost surely, 2^63518222768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63518222768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85901168640).

63518222768 is an abundant number, since it is smaller than the sum of its proper divisors (108284114512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63518222768 is a wasteful number, since it uses less digits than its factorization.

63518222768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 821 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The spelling of 63518222768 in words is "sixty-three billion, five hundred eighteen million, two hundred twenty-two thousand, seven hundred sixty-eight".