4550216643 has 12 divisors (see below), whose sum is σ = 7511468848. Its totient is φ = 2600123760.

The previous prime is 4550216639. The next prime is 4550216669. The reversal of 4550216643 is 3466120554.

4550216643 is a `hidden beast` number, since 4 + 5 + 5 + 0 + 2 + 1 + 6 + 643 = 666.

It is not a de Polignac number, because 4550216643 - 2² = 4550216639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4550216598 and 4550216607.

It is not an unprimeable number, because it can be changed into a prime (4550216543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36112768 + ... + 36112893.

Almost surely, 2^4550216643 is an apocalyptic number.

4550216643 is a deficient number, since it is larger than the sum of its proper divisors (2961252205).

4550216643 is a wasteful number, since it uses less digits than its factorization.

4550216643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72225674 (or 72225671 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 4550216643 is about 67455.2936618024. The cubic root of 4550216643 is about 1657.0820955260.

The spelling of 4550216643 in words is "four billion, five hundred fifty million, two hundred sixteen thousand, six hundred forty-three".