646203464302646 has 32 divisors (see below), whose sum is σ = 1000787886096768. Its totient is φ = 312743879118720.

The previous prime is 646203464302639. The next prime is 646203464302661.

646203464302646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 646203464302591 and 646203464302600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54158165 + ... + 65003951.

It is an arithmetic number, because the mean of its divisors is an integer number (31274621440524).

Almost surely, 2^{646203464302646} is an apocalyptic number.

646203464302646 is a deficient number, since it is larger than the sum of its proper divisors (354584421794122).

646203464302646 is a wasteful number, since it uses less digits than its factorization.

646203464302646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10852076.

The product of its (nonzero) digits is 71663616, while the sum is 56.

The spelling of 646203464302646 in words is "six hundred forty-six trillion, two hundred three billion, four hundred sixty-four million, three hundred two thousand, six hundred forty-six".