168648163615 has 4 divisors (see below), whose sum is σ = 202377796344. Its totient is φ = 134918530888.

The previous prime is 168648163583. The next prime is 168648163639. The reversal of 168648163615 is 516361846861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168648163615 - 2⁵ = 168648163583 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 16864816357 + ... + 16864816366.

It is an arithmetic number, because the mean of its divisors is an integer number (50594449086).

Almost surely, 2^168648163615 is an apocalyptic number.

168648163615 is a deficient number, since it is larger than the sum of its proper divisors (33729632729).

168648163615 is an equidigital number, since it uses as much as digits as its factorization.

168648163615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33729632728.

The product of its digits is 4976640, while the sum is 55.

The spelling of 168648163615 in words is "one hundred sixty-eight billion, six hundred forty-eight million, one hundred sixty-three thousand, six hundred fifteen".