646304264450042 has 64 divisors (see below), whose sum is σ = 1132526213683200. Its totient is φ = 273352295546880.

The previous prime is 646304264450029. The next prime is 646304264450051. The reversal of 646304264450042 is 240054462403646.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260827559 + ... + 263293797.

It is an arithmetic number, because the mean of its divisors is an integer number (17695722088800).

Almost surely, 2^{646304264450042} is an apocalyptic number.

646304264450042 is a deficient number, since it is larger than the sum of its proper divisors (486221949233158).

646304264450042 is a wasteful number, since it uses less digits than its factorization.

646304264450042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474231.

The product of its (nonzero) digits is 13271040, while the sum is 50.

The spelling of 646304264450042 in words is "six hundred forty-six trillion, three hundred four billion, two hundred sixty-four million, four hundred fifty thousand, forty-two".