643630016013 has 8 divisors (see below), whose sum is σ = 863932908000. Its totient is φ = 426206900688.

The previous prime is 643630015871. The next prime is 643630016033. The reversal of 643630016013 is 310610036346.

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

It is not a de Polignac number, because 643630016013 - 2⁸ = 643630015757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643630016033) 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, 719943643 + ... + 719944536.

It is an arithmetic number, because the mean of its divisors is an integer number (107991613500).

Almost surely, 2^643630016013 is an apocalyptic number.

It is an amenable number.

643630016013 is a deficient number, since it is larger than the sum of its proper divisors (220302891987).

643630016013 is a wasteful number, since it uses less digits than its factorization.

643630016013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439888331.

The product of its (nonzero) digits is 23328, while the sum is 33.

The spelling of 643630016013 in words is "six hundred forty-three billion, six hundred thirty million, sixteen thousand, thirteen".