63480000640 has 128 divisors (see below), whose sum is σ = 174216913920. Its totient is φ = 21666631680.

The previous prime is 63480000629. The next prime is 63480000671. The reversal of 63480000640 is 4600008436.

63480000640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967270 + ... + 1030810.

It is an arithmetic number, because the mean of its divisors is an integer number (1361069640).

Almost surely, 2^63480000640 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 63480000640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87108456960).

63480000640 is an abundant number, since it is smaller than the sum of its proper divisors (110736913280).

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

63480000640 is a wasteful number, since it uses less digits than its factorization.

63480000640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63790 (or 63778 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 63480000640 in words is "sixty-three billion, four hundred eighty million, six hundred forty", and thus it is an aban number.