216205924742 has 16 divisors (see below), whose sum is σ = 330039157392. Its totient is φ = 106197321120.

The previous prime is 216205924729. The next prime is 216205924747. The reversal of 216205924742 is 247429502612.

It is a junction number, because it is equal to n+sod(n) for n = 216205924693 and 216205924702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216205924747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014548 + ... + 1209015.

It is an arithmetic number, because the mean of its divisors is an integer number (20627447337).

Almost surely, 2^216205924742 is an apocalyptic number.

216205924742 is a deficient number, since it is larger than the sum of its proper divisors (113833232650).

216205924742 is a wasteful number, since it uses less digits than its factorization.

216205924742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224423.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 216205924742 in words is "two hundred sixteen billion, two hundred five million, nine hundred twenty-four thousand, seven hundred forty-two".