642616304211 has 24 divisors (see below), whose sum is σ = 1060908875520. Its totient is φ = 367180945776.

The previous prime is 642616304191. The next prime is 642616304219. The reversal of 642616304211 is 112403616246.

642616304211 is a `hidden beast` number, since 6 + 4 + 2 + 6 + 1 + 630 + 4 + 2 + 11 = 666.

It is not a de Polignac number, because 642616304211 - 2³⁰ = 641542562387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642616304219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441810 + ... + 1216728.

It is an arithmetic number, because the mean of its divisors is an integer number (44204536480).

Almost surely, 2^642616304211 is an apocalyptic number.

642616304211 is a deficient number, since it is larger than the sum of its proper divisors (418292571309).

642616304211 is a wasteful number, since it uses less digits than its factorization.

642616304211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788095 (or 788092 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 642616304211 in words is "six hundred forty-two billion, six hundred sixteen million, three hundred four thousand, two hundred eleven".