63391188480 has 320 divisors, whose sum is σ = 218646952128. Its totient is φ = 15608053760.

The previous prime is 63391188473. The next prime is 63391188481. The reversal of 63391188480 is 8488119336.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63391188481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6915100 + ... + 6924260.

Almost surely, 2^63391188480 is an apocalyptic number.

63391188480 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 63391188480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109323476064).

63391188480 is an abundant number, since it is smaller than the sum of its proper divisors (155255763648).

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

63391188480 is a wasteful number, since it uses less digits than its factorization.

63391188480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9257 (or 9241 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 63391188480 in words is "sixty-three billion, three hundred ninety-one million, one hundred eighty-eight thousand, four hundred eighty".