168368220559 has 16 divisors (see below), whose sum is σ = 214795342080. Its totient is φ = 128144943360.

The previous prime is 168368220557. The next prime is 168368220563. The reversal of 168368220559 is 955022863861.

It is not a de Polignac number, because 168368220559 - 2¹ = 168368220557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168368220557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25422274 + ... + 25428895.

It is an arithmetic number, because the mean of its divisors is an integer number (13424708880).

Almost surely, 2^168368220559 is an apocalyptic number.

168368220559 is a deficient number, since it is larger than the sum of its proper divisors (46427121521).

168368220559 is a wasteful number, since it uses less digits than its factorization.

168368220559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50851230.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 168368220559 in words is "one hundred sixty-eight billion, three hundred sixty-eight million, two hundred twenty thousand, five hundred fifty-nine".