63696593680 has 40 divisors (see below), whose sum is σ = 149175588312. Its totient is φ = 25292657664.

The previous prime is 63696593677. The next prime is 63696593687. The reversal of 63696593680 is 8639569636.

It can be written as a sum of positive squares in 4 ways, for example, as 19766110464 + 43930483216 = 140592^2 + 209596^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (63696593687) 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, 2894907 + ... + 2916826.

Almost surely, 2^63696593680 is an apocalyptic number.

It is an amenable number.

63696593680 is an abundant number, since it is smaller than the sum of its proper divisors (85478994632).

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

63696593680 is a wasteful number, since it uses less digits than its factorization.

63696593680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811883 (or 5811877 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 61.

The spelling of 63696593680 in words is "sixty-three billion, six hundred ninety-six million, five hundred ninety-three thousand, six hundred eighty".