643140503054 has 64 divisors (see below), whose sum is σ = 1162077235200. Its totient is φ = 261144269568.

The previous prime is 643140503039. The next prime is 643140503063. The reversal of 643140503054 is 450305041346.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5166554 + ... + 5289570.

It is an arithmetic number, because the mean of its divisors is an integer number (18157456800).

Almost surely, 2^643140503054 is an apocalyptic number.

643140503054 is a deficient number, since it is larger than the sum of its proper divisors (518936732146).

643140503054 is a wasteful number, since it uses less digits than its factorization.

643140503054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123297.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 643140503054 in words is "six hundred forty-three billion, one hundred forty million, five hundred three thousand, fifty-four".