646240104146 has 96 divisors (see below), whose sum is σ = 1230034595328. Its totient is φ = 252376750080.

The previous prime is 646240104131. The next prime is 646240104149. The reversal of 646240104146 is 641401042646.

It is not an unprimeable number, because it can be changed into a prime (646240104149) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 32200511 + ... + 32220573.

It is an arithmetic number, because the mean of its divisors is an integer number (12812860368).

Almost surely, 2^646240104146 is an apocalyptic number.

646240104146 is a deficient number, since it is larger than the sum of its proper divisors (583794491182).

646240104146 is a wasteful number, since it uses less digits than its factorization.

646240104146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20416 (or 20409 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 646240104146 in words is "six hundred forty-six billion, two hundred forty million, one hundred four thousand, one hundred forty-six".