643151554504 has 16 divisors (see below), whose sum is σ = 1269378068400. Its totient is φ = 304650736272.

The previous prime is 643151554489. The next prime is 643151554531. The reversal of 643151554504 is 405455151346.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2115629962 + ... + 2115630265.

It is an arithmetic number, because the mean of its divisors is an integer number (79336129275).

Almost surely, 2^643151554504 is an apocalyptic number.

It is an amenable number.

643151554504 is a deficient number, since it is larger than the sum of its proper divisors (626226513896).

643151554504 is a wasteful number, since it uses less digits than its factorization.

643151554504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231260252 (or 4231260248 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 643151554504 in words is "six hundred forty-three billion, one hundred fifty-one million, five hundred fifty-four thousand, five hundred four".