63591018552 has 48 divisors (see below), whose sum is σ = 172282139640. Its totient is φ = 21190056768.

The previous prime is 63591018541. The next prime is 63591018559. The reversal of 63591018552 is 25581019536.

63591018552 is a `hidden beast` number, since 6 + 3 + 5 + 91 + 0 + 1 + 8 + 552 = 666.

63591018552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 63591018498 and 63591018507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63591018559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78738 + ... + 365214.

Almost surely, 2^63591018552 is an apocalyptic number.

It is an amenable number.

63591018552 is an abundant number, since it is smaller than the sum of its proper divisors (108691121088).

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

63591018552 is a wasteful number, since it uses less digits than its factorization.

63591018552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289572 (or 289565 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 63591018552 in words is "sixty-three billion, five hundred ninety-one million, eighteen thousand, five hundred fifty-two".