63224402666 has 4 divisors (see below), whose sum is σ = 94836604002. Its totient is φ = 31612201332.

The previous prime is 63224402663. The next prime is 63224402671. The reversal of 63224402666 is 66620442236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59645850625 + 3578552041 = 244225^2 + 59821^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63224402663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15806100665 + ... + 15806100668.

Almost surely, 2^63224402666 is an apocalyptic number.

63224402666 is a deficient number, since it is larger than the sum of its proper divisors (31612201336).

63224402666 is a wasteful number, since it uses less digits than its factorization.

63224402666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31612201335.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 63224402666 in words is "sixty-three billion, two hundred twenty-four million, four hundred two thousand, six hundred sixty-six".