63867444960 has 576 divisors, whose sum is σ = 233067808512. Its totient is φ = 14570496000.

The previous prime is 63867444947. The next prime is 63867444983. The reversal of 63867444960 is 6944476836.

It is a self number, because there is not a number n which added to its sum of digits gives 63867444960.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 208037127 + ... + 208037433.

It is an arithmetic number, because the mean of its divisors is an integer number (404631612).

Almost surely, 2^63867444960 is an apocalyptic number.

63867444960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63867444960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116533904256).

63867444960 is an abundant number, since it is smaller than the sum of its proper divisors (169200363552).

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

63867444960 is a wasteful number, since it uses less digits than its factorization.

63867444960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 57.

The spelling of 63867444960 in words is "sixty-three billion, eight hundred sixty-seven million, four hundred forty-four thousand, nine hundred sixty".