643265152234 has 16 divisors (see below), whose sum is σ = 1021688640000. Its totient is φ = 302703465664.

The previous prime is 643265152157. The next prime is 643265152261. The reversal of 643265152234 is 432251562346.

643265152234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860817 + ... + 1423915.

It is an arithmetic number, because the mean of its divisors is an integer number (63855540000).

Almost surely, 2^643265152234 is an apocalyptic number.

643265152234 is a deficient number, since it is larger than the sum of its proper divisors (378423487766).

643265152234 is a wasteful number, since it uses less digits than its factorization.

643265152234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596717.

The product of its digits is 1036800, while the sum is 43.

The spelling of 643265152234 in words is "six hundred forty-three billion, two hundred sixty-five million, one hundred fifty-two thousand, two hundred thirty-four".