63449662320 has 240 divisors, whose sum is σ = 236844028512. Its totient is φ = 15091415040.

The previous prime is 63449662313. The next prime is 63449662351. The reversal of 63449662320 is 2326694436.

63449662320 is a `hidden beast` number, since 634 + 4 + 9 + 6 + 6 + 2 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 344182 + ... + 495338.

Almost surely, 2^63449662320 is an apocalyptic number.

63449662320 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 63449662320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118422014256).

63449662320 is an abundant number, since it is smaller than the sum of its proper divisors (173394366192).

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

63449662320 is a wasteful number, since it uses less digits than its factorization.

63449662320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151240 (or 151231 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The spelling of 63449662320 in words is "sixty-three billion, four hundred forty-nine million, six hundred sixty-two thousand, three hundred twenty".