168415576456 has 16 divisors (see below), whose sum is σ = 315896679900. Its totient is φ = 84176461824.

The previous prime is 168415576451. The next prime is 168415576463. The reversal of 168415576456 is 654675514861.

It can be written as a sum of positive squares in 2 ways, for example, as 127070860900 + 41344715556 = 356470^2 + 203334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 168415576456.

It is not an unprimeable number, because it can be changed into a prime (168415576451) 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 3 ways as a sum of consecutive naturals, for example, 3892945 + ... + 3935968.

Almost surely, 2^168415576456 is an apocalyptic number.

It is an amenable number.

168415576456 is a deficient number, since it is larger than the sum of its proper divisors (147481103444).

168415576456 is a wasteful number, since it uses less digits than its factorization.

168415576456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7831608 (or 7831604 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 168415576456 in words is "one hundred sixty-eight billion, four hundred fifteen million, five hundred seventy-six thousand, four hundred fifty-six".