168195309364 has 12 divisors (see below), whose sum is σ = 302296975204. Its totient is φ = 81824745024.

The previous prime is 168195309307. The next prime is 168195309367. The reversal of 168195309364 is 463903591861.

It can be written as a sum of positive squares in 2 ways, for example, as 161677976464 + 6517332900 = 402092^2 + 80730^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168195309367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568227249 + ... + 568227544.

Almost surely, 2^168195309364 is an apocalyptic number.

It is an amenable number.

168195309364 is a deficient number, since it is larger than the sum of its proper divisors (134101665840).

168195309364 is a wasteful number, since it uses less digits than its factorization.

168195309364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136454834 (or 1136454832 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 168195309364 in words is "one hundred sixty-eight billion, one hundred ninety-five million, three hundred nine thousand, three hundred sixty-four".