63684896428 has 24 divisors (see below), whose sum is σ = 112633840592. Its totient is φ = 31504011264.

The previous prime is 63684896423. The next prime is 63684896453. The reversal of 63684896428 is 82469848636.

It is a self number, because there is not a number n which added to its sum of digits gives 63684896428.

It is not an unprimeable number, because it can be changed into a prime (63684896423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1258300 + ... + 1307932.

Almost surely, 2^63684896428 is an apocalyptic number.

It is an amenable number.

63684896428 is a deficient number, since it is larger than the sum of its proper divisors (48948944164).

63684896428 is a wasteful number, since it uses less digits than its factorization.

63684896428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53041 (or 53039 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 64.

The spelling of 63684896428 in words is "sixty-three billion, six hundred eighty-four million, eight hundred ninety-six thousand, four hundred twenty-eight".