63753668516 has 6 divisors (see below), whose sum is σ = 111568919910. Its totient is φ = 31876834256.

The previous prime is 63753668507. The next prime is 63753668521. The reversal of 63753668516 is 61586635736.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62652092416 + 1101576100 = 250304^2 + 33190^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7969208561 + ... + 7969208568.

It is an arithmetic number, because the mean of its divisors is an integer number (18594819985).

Almost surely, 2^63753668516 is an apocalyptic number.

It is an amenable number.

63753668516 is a deficient number, since it is larger than the sum of its proper divisors (47815251394).

63753668516 is a wasteful number, since it uses less digits than its factorization.

63753668516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15938417133 (or 15938417131 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 56.

The spelling of 63753668516 in words is "sixty-three billion, seven hundred fifty-three million, six hundred sixty-eight thousand, five hundred sixteen".