63524548640 has 144 divisors (see below), whose sum is σ = 174754262592. Its totient is φ = 21757994496.

The previous prime is 63524548639. The next prime is 63524548649. The reversal of 63524548640 is 4684542536.

It is not an unprimeable number, because it can be changed into a prime (63524548649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9114437 + ... + 9121403.

It is an arithmetic number, because the mean of its divisors is an integer number (1213571268).

Almost surely, 2^63524548640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63524548640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87377131296).

63524548640 is an abundant number, since it is smaller than the sum of its proper divisors (111229713952).

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

63524548640 is a wasteful number, since it uses less digits than its factorization.

63524548640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159 (or 8144 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 63524548640 in words is "sixty-three billion, five hundred twenty-four million, five hundred forty-eight thousand, six hundred forty".