63506855428 has 24 divisors (see below), whose sum is σ = 111957591200. Its totient is φ = 31519058688.

The previous prime is 63506855417. The next prime is 63506855429. The reversal of 63506855428 is 82455860536.

It is not an unprimeable number, because it can be changed into a prime (63506855429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5385643 + ... + 5397421.

Almost surely, 2^63506855428 is an apocalyptic number.

It is an amenable number.

63506855428 is a deficient number, since it is larger than the sum of its proper divisors (48450735772).

63506855428 is a wasteful number, since it uses less digits than its factorization.

63506855428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21619 (or 21617 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 63506855428 in words is "sixty-three billion, five hundred six million, eight hundred fifty-five thousand, four hundred twenty-eight".