63524681672 has 16 divisors (see below), whose sum is σ = 119144910300. Its totient is φ = 31752705600.

The previous prime is 63524681657. The next prime is 63524681683. The reversal of 63524681672 is 27618642536.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62983933156 + 540748516 = 250966^2 + 23254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63524681672.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176347 + ... + 1229162.

Almost surely, 2^63524681672 is an apocalyptic number.

It is an amenable number.

63524681672 is a deficient number, since it is larger than the sum of its proper divisors (55620228628).

63524681672 is a wasteful number, since it uses less digits than its factorization.

63524681672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408816 (or 2408812 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The spelling of 63524681672 in words is "sixty-three billion, five hundred twenty-four million, six hundred eighty-one thousand, six hundred seventy-two".