63605683044 has 72 divisors (see below), whose sum is σ = 162767011680. Its totient is φ = 20940534912.

The previous prime is 63605683021. The next prime is 63605683079. The reversal of 63605683044 is 44038650636.

63605683044 is a `hidden beast` number, since 6 + 3 + 605 + 6 + 8 + 30 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3023707 + ... + 3044669.

It is an arithmetic number, because the mean of its divisors is an integer number (2260652940).

Almost surely, 2^63605683044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63605683044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81383505840).

63605683044 is an abundant number, since it is smaller than the sum of its proper divisors (99161328636).

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

63605683044 is a wasteful number, since it uses less digits than its factorization.

63605683044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22009 (or 22004 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 63605683044 in words is "sixty-three billion, six hundred five million, six hundred eighty-three thousand, forty-four".