168364121644 has 6 divisors (see below), whose sum is σ = 294637212884. Its totient is φ = 84182060820.

The previous prime is 168364121617. The next prime is 168364121657. The reversal of 168364121644 is 446121463861.

It is a happy number.

168364121644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 168364121594 and 168364121603.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21045515202 + ... + 21045515209.

Almost surely, 2^168364121644 is an apocalyptic number.

It is an amenable number.

168364121644 is a deficient number, since it is larger than the sum of its proper divisors (126273091240).

168364121644 is a wasteful number, since it uses less digits than its factorization.

168364121644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42091030415 (or 42091030413 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The spelling of 168364121644 in words is "one hundred sixty-eight billion, three hundred sixty-four million, one hundred twenty-one thousand, six hundred forty-four".