63528672561 has 16 divisors (see below), whose sum is σ = 85248123840. Its totient is φ = 42081681600.

The previous prime is 63528672463. The next prime is 63528672677. The reversal of 63528672561 is 16527682536.

It is not a de Polignac number, because 63528672561 - 2¹⁰ = 63528671537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63528672161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195486 + ... + 406536.

It is an arithmetic number, because the mean of its divisors is an integer number (5328007740).

Almost surely, 2^63528672561 is an apocalyptic number.

It is an amenable number.

63528672561 is a deficient number, since it is larger than the sum of its proper divisors (21719451279).

63528672561 is a wasteful number, since it uses less digits than its factorization.

63528672561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211696.

The product of its digits is 3628800, while the sum is 51.

The spelling of 63528672561 in words is "sixty-three billion, five hundred twenty-eight million, six hundred seventy-two thousand, five hundred sixty-one".