63950453856 has 288 divisors, whose sum is σ = 198338868000. Its totient is φ = 20239994880.

The previous prime is 63950453843. The next prime is 63950453857. The reversal of 63950453856 is 65835405936.

It is a happy number.

63950453856 is a `hidden beast` number, since 6 + 3 + 9 + 50 + 4 + 538 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63950453857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13753420 + ... + 13758068.

It is an arithmetic number, because the mean of its divisors is an integer number (688676625).

Almost surely, 2^63950453856 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 63950453856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99169434000).

63950453856 is an abundant number, since it is smaller than the sum of its proper divisors (134388414144).

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

63950453856 is a wasteful number, since it uses less digits than its factorization.

63950453856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764 (or 4744 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 63950453856 in words is "sixty-three billion, nine hundred fifty million, four hundred fifty-three thousand, eight hundred fifty-six".