63434401320 has 128 divisors (see below), whose sum is σ = 196074224640. Its totient is φ = 16407644160.

The previous prime is 63434401309. The next prime is 63434401351. The reversal of 63434401320 is 2310443436.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 813897 + ... + 888423.

It is an arithmetic number, because the mean of its divisors is an integer number (1531829880).

Almost surely, 2^63434401320 is an apocalyptic number.

63434401320 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 63434401320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98037112320).

63434401320 is an abundant number, since it is smaller than the sum of its proper divisors (132639823320).

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

63434401320 is a wasteful number, since it uses less digits than its factorization.

63434401320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74755 (or 74751 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 63434401320 its reverse (2310443436), we get a palindrome (65744844756).

The spelling of 63434401320 in words is "sixty-three billion, four hundred thirty-four million, four hundred one thousand, three hundred twenty".