643614424413 has 16 divisors (see below), whose sum is σ = 876304175616. Its totient is φ = 420079057200.

The previous prime is 643614424309. The next prime is 643614424463. The reversal of 643614424413 is 314424416346.

It is a happy number.

It is not a de Polignac number, because 643614424413 - 2¹⁴ = 643614408029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643614424463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9789513 + ... + 9855038.

It is an arithmetic number, because the mean of its divisors is an integer number (54769010976).

Almost surely, 2^643614424413 is an apocalyptic number.

It is an amenable number.

643614424413 is a deficient number, since it is larger than the sum of its proper divisors (232689751203).

643614424413 is a wasteful number, since it uses less digits than its factorization.

643614424413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19644784.

The product of its digits is 663552, while the sum is 42.

The spelling of 643614424413 in words is "six hundred forty-three billion, six hundred fourteen million, four hundred twenty-four thousand, four hundred thirteen".