4361644656 has 120 divisors (see below), whose sum is σ = 12564218160. Its totient is φ = 1411458048.

The previous prime is 4361644643. The next prime is 4361644663. The reversal of 4361644656 is 6564461634.

4361644656 is a `hidden beast` number, since 436 + 164 + 4 + 6 + 56 = 666.

It is a congruent number.

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, 4576276 + ... + 4577228.

It is an arithmetic number, because the mean of its divisors is an integer number (104701818).

Almost surely, 2^4361644656 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 4361644656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6282109080).

4361644656 is an abundant number, since it is smaller than the sum of its proper divisors (8202573504).

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

4361644656 is a wasteful number, since it uses less digits than its factorization.

4361644656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1854 counting only the distinct ones).

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

The square root of 4361644656 is about 66042.7487011254. The cubic root of 4361644656 is about 1633.8672219792.

The spelling of 4361644656 in words is "four billion, three hundred sixty-one million, six hundred forty-four thousand, six hundred fifty-six".