63387678336 has 64 divisors (see below), whose sum is σ = 168449915520. Its totient is φ = 21119639552.

The previous prime is 63387678293. The next prime is 63387678349.

63387678336 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 63387678336.

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, 836521 + ... + 909143.

It is an arithmetic number, because the mean of its divisors is an integer number (2632029930).

Almost surely, 2^63387678336 is an apocalyptic number.

It is an amenable number.

63387678336 is an abundant number, since it is smaller than the sum of its proper divisors (105062237184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63387678336 is a wasteful number, since it uses less digits than its factorization.

63387678336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74913 (or 74901 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 60.

The spelling of 63387678336 in words is "sixty-three billion, three hundred eighty-seven million, six hundred seventy-eight thousand, three hundred thirty-six".