642646362302 has 32 divisors (see below), whose sum is σ = 1106830775232. Its totient is φ = 274132952064.

The previous prime is 642646362289. The next prime is 642646362343. The reversal of 642646362302 is 203263646246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8813498 + ... + 8886114.

It is an arithmetic number, because the mean of its divisors is an integer number (34588461726).

Almost surely, 2^642646362302 is an apocalyptic number.

642646362302 is a deficient number, since it is larger than the sum of its proper divisors (464184412930).

642646362302 is a wasteful number, since it uses less digits than its factorization.

642646362302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75572.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 642646362302 in words is "six hundred forty-two billion, six hundred forty-six million, three hundred sixty-two thousand, three hundred two".