643254603104 has 24 divisors (see below), whose sum is σ = 1266426963648. Its totient is φ = 321622358400.

The previous prime is 643254603031. The next prime is 643254603107. The reversal of 643254603104 is 401306452346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643254603107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872934 + ... + 3088730.

It is an arithmetic number, because the mean of its divisors is an integer number (52767790152).

Almost surely, 2^643254603104 is an apocalyptic number.

It is an amenable number.

643254603104 is a deficient number, since it is larger than the sum of its proper divisors (623172360544).

643254603104 is a wasteful number, since it uses less digits than its factorization.

643254603104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308958 (or 308950 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 643254603104 in words is "six hundred forty-three billion, two hundred fifty-four million, six hundred three thousand, one hundred four".