63557475536 has 40 divisors (see below), whose sum is σ = 124419147528. Its totient is φ = 31449600000.

The previous prime is 63557475419. The next prime is 63557475599.

63557475536 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 19055041600 + 44502433936 = 138040^2 + 210956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4066136 + ... + 4081736.

Almost surely, 2^63557475536 is an apocalyptic number.

It is an amenable number.

63557475536 is a deficient number, since it is larger than the sum of its proper divisors (60861671992).

63557475536 is a wasteful number, since it uses less digits than its factorization.

63557475536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18231 (or 18225 counting only the distinct ones).

The product of its digits is 39690000, while the sum is 56.

The spelling of 63557475536 in words is "sixty-three billion, five hundred fifty-seven million, four hundred seventy-five thousand, five hundred thirty-six".