63434889180 has 480 divisors, whose sum is σ = 225212448384. Its totient is φ = 14829889536.

The previous prime is 63434889149. The next prime is 63434889187. The reversal of 63434889180 is 8198843436.

63434889180 is a `hidden beast` number, since 6 + 343 + 48 + 89 + 180 = 666.

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 (63434889187) by changing a digit.

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 159 ways as a sum of consecutive naturals, for example, 83797362 + ... + 83798118.

Almost surely, 2^63434889180 is an apocalyptic number.

63434889180 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 63434889180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112606224192).

63434889180 is an abundant number, since it is smaller than the sum of its proper divisors (161777559204).

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

63434889180 is a wasteful number, since it uses less digits than its factorization.

63434889180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 63434889180 in words is "sixty-three billion, four hundred thirty-four million, eight hundred eighty-nine thousand, one hundred eighty".