63291388608 has 420 divisors, whose sum is σ = 219547345512. Its totient is φ = 17975623680.

The previous prime is 63291388591. The next prime is 63291388649. The reversal of 63291388608 is 80688319236.

It is a happy number.

63291388608 is a `hidden beast` number, since 6 + 3 + 29 + 1 + 3 + 8 + 8 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 49024443 + ... + 49025733.

Almost surely, 2^63291388608 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 63291388608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109773672756).

63291388608 is an abundant number, since it is smaller than the sum of its proper divisors (156255956904).

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

63291388608 is a wasteful number, since it uses less digits than its factorization.

63291388608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 63291388608 in words is "sixty-three billion, two hundred ninety-one million, three hundred eighty-eight thousand, six hundred eight".