4644285561 has 6 divisors (see below), whose sum is σ = 6708412490. Its totient is φ = 3096190368.

The previous prime is 4644285559. The next prime is 4644285571. The reversal of 4644285561 is 1655824464.

It is a happy number.

4644285561 is a `hidden beast` number, since 4 + 6 + 4 + 4 + 2 + 85 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3763086336 + 881199225 = 61344^2 + 29685^2 .

It is not a de Polignac number, because 4644285561 - 2¹ = 4644285559 is a prime.

It is a super-2 number, since 2×4644285561² = 43138776744226169442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4644285571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258015856 + ... + 258015873.

Almost surely, 2^4644285561 is an apocalyptic number.

It is an amenable number.

4644285561 is a deficient number, since it is larger than the sum of its proper divisors (2064126929).

4644285561 is a wasteful number, since it uses less digits than its factorization.

4644285561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516031735 (or 516031732 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 4644285561 is about 68148.9953044064. The cubic root of 4644285561 is about 1668.4235258479.

The spelling of 4644285561 in words is "four billion, six hundred forty-four million, two hundred eighty-five thousand, five hundred sixty-one".