163145205223346 has 8 divisors (see below), whose sum is σ = 244721609115564. Its totient is φ = 81571335518160.

The previous prime is 163145205223289. The next prime is 163145205223391. The reversal of 163145205223346 is 643322502541361.

It can be written as a sum of positive squares in 2 ways, for example, as 154143771166225 + 9001434057121 = 12415465^2 + 3000239^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 163145205223346.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633385805 + ... + 633643328.

Almost surely, 2^{163145205223346} is an apocalyptic number.

163145205223346 is a deficient number, since it is larger than the sum of its proper divisors (81576403892218).

163145205223346 is a wasteful number, since it uses less digits than its factorization.

163145205223346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267093516.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 163145205223346 in words is "one hundred sixty-three trillion, one hundred forty-five billion, two hundred five million, two hundred twenty-three thousand, three hundred forty-six".