63444265860 has 96 divisors (see below), whose sum is σ = 184063985280. Its totient is φ = 16317862912.

The previous prime is 63444265837. The next prime is 63444265861. The reversal of 63444265860 is 6856244436.

It is not an unprimeable number, because it can be changed into a prime (63444265861) by changing a digit.

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, 18544 + ... + 356696.

It is an arithmetic number, because the mean of its divisors is an integer number (1917333180).

Almost surely, 2^63444265860 is an apocalyptic number.

63444265860 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 63444265860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92031992640).

63444265860 is an abundant number, since it is smaller than the sum of its proper divisors (120619719420).

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

63444265860 is a wasteful number, since it uses less digits than its factorization.

63444265860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338277 (or 338275 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 63444265860 in words is "sixty-three billion, four hundred forty-four million, two hundred sixty-five thousand, eight hundred sixty".