63397963552 has 144 divisors (see below), whose sum is σ = 157670525376. Its totient is φ = 24562137600.

The previous prime is 63397963529. The next prime is 63397963553. The reversal of 63397963552 is 25536979336.

It is not an unprimeable number, because it can be changed into a prime (63397963553) 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, 4899363 + ... + 4912285.

It is an arithmetic number, because the mean of its divisors is an integer number (1094934204).

Almost surely, 2^63397963552 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 63397963552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78835262688).

63397963552 is an abundant number, since it is smaller than the sum of its proper divisors (94272561824).

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

63397963552 is a wasteful number, since it uses less digits than its factorization.

63397963552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143 (or 13124 counting only the distinct ones).

The product of its digits is 27556200, while the sum is 58.

The spelling of 63397963552 in words is "sixty-three billion, three hundred ninety-seven million, nine hundred sixty-three thousand, five hundred fifty-two".