642465363564246 has 8 divisors (see below), whose sum is σ = 1284930727128504. Its totient is φ = 214155121188080.

The previous prime is 642465363564221. The next prime is 642465363564281.

It is a happy number.

642465363564246 is nontrivially palindromic in base 10.

642465363564246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

642465363564246 is an admirable number.

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, 53538780297015 + ... + 53538780297026.

It is an arithmetic number, because the mean of its divisors is an integer number (160616340891063).

Almost surely, 2^{642465363564246} is an apocalyptic number.

642465363564246 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.

642465363564246 is a wasteful number, since it uses less digits than its factorization.

642465363564246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107077560594046.

The product of its digits is 1791590400, while the sum is 66.

The spelling of 642465363564246 in words is "six hundred forty-two trillion, four hundred sixty-five billion, three hundred sixty-three million, five hundred sixty-four thousand, two hundred forty-six".