168457057128530 has 8 divisors (see below), whose sum is σ = 303222702831372. Its totient is φ = 67382822851408.

The previous prime is 168457057128509. The next prime is 168457057128539. The reversal of 168457057128530 is 35821750754861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158626493279401 + 9830563849129 = 12594701^2 + 3135373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (168457057128539) 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 3 ways as a sum of consecutive naturals, for example, 8422852856417 + ... + 8422852856436.

Almost surely, 2^{168457057128530} is an apocalyptic number.

168457057128530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168457057128530 is a deficient number, since it is larger than the sum of its proper divisors (134765645702842).

168457057128530 is a wasteful number, since it uses less digits than its factorization.

168457057128530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16845705712860.

The product of its (nonzero) digits is 56448000, while the sum is 62.

The spelling of 168457057128530 in words is "one hundred sixty-eight trillion, four hundred fifty-seven billion, fifty-seven million, one hundred twenty-eight thousand, five hundred thirty".