63989730288 has 360 divisors, whose sum is σ = 204072081408. Its totient is φ = 18561312000.

The previous prime is 63989730263. The next prime is 63989730293. The reversal of 63989730288 is 88203798936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 193322283 + ... + 193322613.

Almost surely, 2^63989730288 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 63989730288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102036040704).

63989730288 is an abundant number, since it is smaller than the sum of its proper divisors (140082351120).

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

63989730288 is a wasteful number, since it uses less digits than its factorization.

63989730288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 63989730288 in words is "sixty-three billion, nine hundred eighty-nine million, seven hundred thirty thousand, two hundred eighty-eight".