643266612303 has 24 divisors (see below), whose sum is σ = 999473235120. Its totient is φ = 366934861440.

The previous prime is 643266612281. The next prime is 643266612319. The reversal of 643266612303 is 303216662346.

It is not a de Polignac number, because 643266612303 - 2¹⁴ = 643266595919 is a prime.

It is a super-2 number, since 2×643266612303² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643266612383) 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, 3761668 + ... + 3928953.

It is an arithmetic number, because the mean of its divisors is an integer number (41644718130).

Almost surely, 2^643266612303 is an apocalyptic number.

643266612303 is a deficient number, since it is larger than the sum of its proper divisors (356206622817).

643266612303 is a wasteful number, since it uses less digits than its factorization.

643266612303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691207 (or 7691200 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 42.

The spelling of 643266612303 in words is "six hundred forty-three billion, two hundred sixty-six million, six hundred twelve thousand, three hundred three".