63485815768 has 16 divisors (see below), whose sum is σ = 119039858280. Its totient is φ = 31741853568.

The previous prime is 63485815753. The next prime is 63485815781. The reversal of 63485815768 is 86751858436.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 162880 + ... + 391792.

Almost surely, 2^63485815768 is an apocalyptic number.

It is an amenable number.

63485815768 is a deficient number, since it is larger than the sum of its proper divisors (55554042512).

63485815768 is a wasteful number, since it uses less digits than its factorization.

63485815768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263586 (or 263582 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 61.

The spelling of 63485815768 in words is "sixty-three billion, four hundred eighty-five million, eight hundred fifteen thousand, seven hundred sixty-eight".