643503043462 has 96 divisors (see below), whose sum is σ = 1050721943040. Its totient is φ = 295342080000.

The previous prime is 643503043429. The next prime is 643503043489. The reversal of 643503043462 is 264340305346.

It is a happy number.

643503043462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 836804614 + ... + 836805382.

It is an arithmetic number, because the mean of its divisors is an integer number (10945020240).

Almost surely, 2^643503043462 is an apocalyptic number.

643503043462 is a deficient number, since it is larger than the sum of its proper divisors (407218899578).

643503043462 is a wasteful number, since it uses less digits than its factorization.

643503043462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 643503043462 in words is "six hundred forty-three billion, five hundred three million, forty-three thousand, four hundred sixty-two".