4415649561 has 24 divisors (see below), whose sum is σ = 6407982464. Its totient is φ = 2930035680.

The previous prime is 4415649527. The next prime is 4415649587. The reversal of 4415649561 is 1659465144.

4415649561 is a `hidden beast` number, since 4 + 4 + 156 + 495 + 6 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4415649561 is a prime.

It is a super-2 number, since 2×4415649561² = 38995922091118985442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4415641561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3326880 + ... + 3328206.

Almost surely, 2^4415649561 is an apocalyptic number.

It is an amenable number.

4415649561 is a deficient number, since it is larger than the sum of its proper divisors (1992332903).

4415649561 is a wasteful number, since it uses less digits than its factorization.

4415649561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781 (or 2778 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 4415649561 is about 66450.3541074086. The cubic root of 4415649561 is about 1640.5829725245.

The spelling of 4415649561 in words is "four billion, four hundred fifteen million, six hundred forty-nine thousand, five hundred sixty-one".