68020586218 has 16 divisors (see below), whose sum is σ = 116342903880. Its totient is φ = 29547403776.

The previous prime is 68020586071. The next prime is 68020586219. The reversal of 68020586218 is 81268502086.

It can be written as a sum of positive squares in 4 ways, for example, as 38272270689 + 29748315529 = 195633^2 + 172477^2 .

It is not an unprimeable number, because it can be changed into a prime (68020586219) by changing a digit.

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, 76945923 + ... + 76946806.

Almost surely, 2^68020586218 is an apocalyptic number.

68020586218 is a deficient number, since it is larger than the sum of its proper divisors (48322317662).

68020586218 is a wasteful number, since it uses less digits than its factorization.

68020586218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153892761.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 68020586218 in words is "sixty-eight billion, twenty million, five hundred eighty-six thousand, two hundred eighteen".