646063043646 has 8 divisors (see below), whose sum is σ = 1292126087304. Its totient is φ = 215354347880.

The previous prime is 646063043603. The next prime is 646063043677. The reversal of 646063043646 is 646340360646.

It is a sphenic number, since it is the product of 3 distinct primes.

646063043646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 646063043595 and 646063043604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53838586965 + ... + 53838586976.

It is an arithmetic number, because the mean of its divisors is an integer number (161515760913).

Almost surely, 2^646063043646 is an apocalyptic number.

646063043646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646063043646 is a wasteful number, since it uses less digits than its factorization.

646063043646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107677173946.

The product of its (nonzero) digits is 4478976, while the sum is 48.

The spelling of 646063043646 in words is "six hundred forty-six billion, sixty-three million, forty-three thousand, six hundred forty-six".