63969382400 has 936 divisors, whose sum is σ = 215365635360. Its totient is φ = 18579456000.

The previous prime is 63969382363. The next prime is 63969382409. The reversal of 63969382400 is 428396936.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63969382409) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1048678370 + ... + 1048678430.

Almost surely, 2^63969382400 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 63969382400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107682817680).

63969382400 is an abundant number, since it is smaller than the sum of its proper divisors (151396252960).

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

63969382400 is a wasteful number, since it uses less digits than its factorization.

63969382400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 63969382400 in words is "sixty-three billion, nine hundred sixty-nine million, three hundred eighty-two thousand, four hundred".