643103052217 has 8 divisors (see below), whose sum is σ = 646493760000. Its totient is φ = 639712591440.

The previous prime is 643103052203. The next prime is 643103052223. The reversal of 643103052217 is 712250301346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 643103052217 - 2¹⁹ = 643102527929 is a prime.

It is a super-5 number, since 5×643103052217⁵ (a number of 60 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (643103092217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7754034 + ... + 7836532.

It is an arithmetic number, because the mean of its divisors is an integer number (80811720000).

Almost surely, 2^643103052217 is an apocalyptic number.

It is an amenable number.

643103052217 is a deficient number, since it is larger than the sum of its proper divisors (3390707783).

643103052217 is a wasteful number, since it uses less digits than its factorization.

643103052217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123503.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 643103052217 in words is "six hundred forty-three billion, one hundred three million, fifty-two thousand, two hundred seventeen".