646040513034104 has 8 divisors (see below), whose sum is σ = 1211325961938960. Its totient is φ = 323020256517048.

The previous prime is 646040513034083. The next prime is 646040513034127. The reversal of 646040513034104 is 401430315040646.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 40377532064624 + ... + 40377532064639.

It is an arithmetic number, because the mean of its divisors is an integer number (151415745242370).

Almost surely, 2^{646040513034104} is an apocalyptic number.

It is an amenable number.

646040513034104 is a deficient number, since it is larger than the sum of its proper divisors (565285448904856).

646040513034104 is a wasteful number, since it uses less digits than its factorization.

646040513034104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80755064129269 (or 80755064129265 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 646040513034104 in words is "six hundred forty-six trillion, forty billion, five hundred thirteen million, thirty-four thousand, one hundred four".