643108481014 has 16 divisors (see below), whose sum is σ = 983840126400. Its totient is φ = 315193185544.

The previous prime is 643108480981. The next prime is 643108481017. The reversal of 643108481014 is 410184801346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643108481017) 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, 7812184 + ... + 7894075.

It is an arithmetic number, because the mean of its divisors is an integer number (61490007900).

Almost surely, 2^643108481014 is an apocalyptic number.

643108481014 is a deficient number, since it is larger than the sum of its proper divisors (340731645386).

643108481014 is a wasteful number, since it uses less digits than its factorization.

643108481014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15706667.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 643108481014 in words is "six hundred forty-three billion, one hundred eight million, four hundred eighty-one thousand, fourteen".