63361288666 has 16 divisors (see below), whose sum is σ = 102359986344. Its totient is φ = 29241633024.

The previous prime is 63361288649. The next prime is 63361288681. The reversal of 63361288666 is 66688216336.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34808738041 + 28552550625 = 186571^2 + 168975^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334206 + ... + 488278.

Almost surely, 2^63361288666 is an apocalyptic number.

63361288666 is a deficient number, since it is larger than the sum of its proper divisors (38998697678).

63361288666 is a wasteful number, since it uses less digits than its factorization.

63361288666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169905.

The product of its digits is 8957952, while the sum is 55.

The spelling of 63361288666 in words is "sixty-three billion, three hundred sixty-one million, two hundred eighty-eight thousand, six hundred sixty-six".