63231646320 has 120 divisors (see below), whose sum is σ = 212923160736. Its totient is φ = 16816495104.

The previous prime is 63231646297. The next prime is 63231646349. The reversal of 63231646320 is 2364613236.

63231646320 is a `hidden beast` number, since 6 + 3 + 2 + 3 + 1 + 646 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150837 + ... + 386283.

Almost surely, 2^63231646320 is an apocalyptic number.

63231646320 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 63231646320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106461580368).

63231646320 is an abundant number, since it is smaller than the sum of its proper divisors (149691514416).

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

63231646320 is a wasteful number, since it uses less digits than its factorization.

63231646320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235839 (or 235830 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 63231646320 in words is "sixty-three billion, two hundred thirty-one million, six hundred forty-six thousand, three hundred twenty".