642452626254246 has 64 divisors (see below), whose sum is σ = 1362213096468480. Its totient is φ = 201639866762880.

The previous prime is 642452626254119. The next prime is 642452626254253.

642452626254246 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 642452626254246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949081735 + ... + 949758413.

It is an arithmetic number, because the mean of its divisors is an integer number (21284579632320).

Almost surely, 2^{642452626254246} is an apocalyptic number.

642452626254246 is an abundant number, since it is smaller than the sum of its proper divisors (719760470214234).

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

642452626254246 is a wasteful number, since it uses less digits than its factorization.

642452626254246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814709.

The product of its digits is 265420800, while the sum is 60.

The spelling of 642452626254246 in words is "six hundred forty-two trillion, four hundred fifty-two billion, six hundred twenty-six million, two hundred fifty-four thousand, two hundred forty-six".