63886610864 has 40 divisors (see below), whose sum is σ = 125638558320. Its totient is φ = 31467149568.

The previous prime is 63886610833. The next prime is 63886610897. The reversal of 63886610864 is 46801668836.

It is a happy number.

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, 195839 + ... + 407585.

It is an arithmetic number, because the mean of its divisors is an integer number (3140963958).

Almost surely, 2^63886610864 is an apocalyptic number.

It is an amenable number.

63886610864 is a deficient number, since it is larger than the sum of its proper divisors (61751947456).

63886610864 is a wasteful number, since it uses less digits than its factorization.

63886610864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212037 (or 212031 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 56.

The spelling of 63886610864 in words is "sixty-three billion, eight hundred eighty-six million, six hundred ten thousand, eight hundred sixty-four".