216857359582 has 16 divisors (see below), whose sum is σ = 331457527440. Its totient is φ = 106371937152.

The previous prime is 216857359567. The next prime is 216857359601. The reversal of 216857359582 is 285953758612.

It is a super-2 number, since 2×216857359582² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216857359582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985894 + ... + 1185622.

It is an arithmetic number, because the mean of its divisors is an integer number (20716095465).

Almost surely, 2^216857359582 is an apocalyptic number.

216857359582 is a deficient number, since it is larger than the sum of its proper divisors (114600167858).

216857359582 is a wasteful number, since it uses less digits than its factorization.

216857359582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210027.

The product of its digits is 36288000, while the sum is 61.

The spelling of 216857359582 in words is "two hundred sixteen billion, eight hundred fifty-seven million, three hundred fifty-nine thousand, five hundred eighty-two".