4446651561 has 16 divisors (see below), whose sum is σ = 6514394880. Its totient is φ = 2675549520.

The previous prime is 4446651557. The next prime is 4446651569. The reversal of 4446651561 is 1651566444.

It is a happy number.

4446651561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4446651561 - 2² = 4446651557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4446651569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480115 + ... + 489288.

It is an arithmetic number, because the mean of its divisors is an integer number (407149680).

Almost surely, 2^4446651561 is an apocalyptic number.

It is an amenable number.

4446651561 is a deficient number, since it is larger than the sum of its proper divisors (2067743319).

4446651561 is a wasteful number, since it uses less digits than its factorization.

4446651561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969556.

The product of its digits is 345600, while the sum is 42.

The square root of 4446651561 is about 66683.2179862370. The cubic root of 4446651561 is about 1644.4134987225.

The spelling of 4446651561 in words is "four billion, four hundred forty-six million, six hundred fifty-one thousand, five hundred sixty-one".