63621010560 has 256 divisors, whose sum is σ = 214679808000. Its totient is φ = 15981244416.

The previous prime is 63621010459. The next prime is 63621010571. The reversal of 63621010560 is 6501012636.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6525049 + ... + 6534791.

It is an arithmetic number, because the mean of its divisors is an integer number (838593000).

Almost surely, 2^63621010560 is an apocalyptic number.

63621010560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63621010560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107339904000).

63621010560 is an abundant number, since it is smaller than the sum of its proper divisors (151058797440).

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

63621010560 is a wasteful number, since it uses less digits than its factorization.

63621010560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963 (or 9951 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 63621010560 in words is "sixty-three billion, six hundred twenty-one million, ten thousand, five hundred sixty".