168342805057 has 16 divisors (see below), whose sum is σ = 195227484160. Its totient is φ = 142174560528.

The previous prime is 168342805051. The next prime is 168342805153. The reversal of 168342805057 is 750508243861.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-168342805057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168342805057.

It is not an unprimeable number, because it can be changed into a prime (168342805051) 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, 43233 + ... + 581854.

It is an arithmetic number, because the mean of its divisors is an integer number (12201717760).

Almost surely, 2^168342805057 is an apocalyptic number.

It is an amenable number.

168342805057 is a deficient number, since it is larger than the sum of its proper divisors (26884679103).

168342805057 is an equidigital number, since it uses as much as digits as its factorization.

168342805057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625660.

The product of its (nonzero) digits is 1612800, while the sum is 49.

It can be divided in two parts, 168 and 342805057, that added together give a square (342805225 = 18515²).

The spelling of 168342805057 in words is "one hundred sixty-eight billion, three hundred forty-two million, eight hundred five thousand, fifty-seven".