646243330011056 has 40 divisors (see below), whose sum is σ = 1265430742717680. Its totient is φ = 319682801700864.

The previous prime is 646243330011049. The next prime is 646243330011079. The reversal of 646243330011056 is 650110033342646.

It is a junction number, because it is equal to n+sod(n) for n = 646243330010998 and 646243330011016.

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 7 ways as a sum of consecutive naturals, for example, 65515706 + ... + 74731481.

It is an arithmetic number, because the mean of its divisors is an integer number (31635768567942).

Almost surely, 2^{646243330011056} is an apocalyptic number.

It is an amenable number.

646243330011056 is a deficient number, since it is larger than the sum of its proper divisors (619187412706624).

646243330011056 is a wasteful number, since it uses less digits than its factorization.

646243330011056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140250261 (or 140250255 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 646243330011056 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, fifty-six".