168368220560 has 40 divisors (see below), whose sum is σ = 391501426680. Its totient is φ = 67339492352.

The previous prime is 168368220557. The next prime is 168368220563. The reversal of 168368220560 is 65022863861.

It is an interprime number because it is at equal distance from previous prime (168368220557) and next prime (168368220563).

It can be written as a sum of positive squares in 4 ways, for example, as 320696464 + 168047524096 = 17908^2 + 409936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (168368220563) 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, 600194 + ... + 834846.

It is an arithmetic number, because the mean of its divisors is an integer number (9787535667).

Almost surely, 2^168368220560 is an apocalyptic number.

168368220560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168368220560 is an abundant number, since it is smaller than the sum of its proper divisors (223133206120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168368220560 is a wasteful number, since it uses less digits than its factorization.

168368220560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243635 (or 243629 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 168368220560 in words is "one hundred sixty-eight billion, three hundred sixty-eight million, two hundred twenty thousand, five hundred sixty".