168315274380018 has 16 divisors (see below), whose sum is σ = 337872727910016. Its totient is φ = 55898061601680.

The previous prime is 168315274380013. The next prime is 168315274380037. The reversal of 168315274380018 is 810083472513861.

It is a self number, because there is not a number n which added to its sum of digits gives 168315274380018.

It is not an unprimeable number, because it can be changed into a prime (168315274380013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51757462821 + ... + 51757466072.

It is an arithmetic number, because the mean of its divisors is an integer number (21117045494376).

Almost surely, 2^{168315274380018} is an apocalyptic number.

168315274380018 is an abundant number, since it is smaller than the sum of its proper divisors (169557453529998).

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

168315274380018 is a wasteful number, since it uses less digits than its factorization.

168315274380018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103514929169.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 168315274380018 in words is "one hundred sixty-eight trillion, three hundred fifteen billion, two hundred seventy-four million, three hundred eighty thousand, eighteen".