20168368370167 has 4 divisors (see below), whose sum is σ = 20168401343896. Its totient is φ = 20168335396440.

The previous prime is 20168368370159. The next prime is 20168368370191. The reversal of 20168368370167 is 76107386386102.

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 20168368370167 - 2³ = 20168368370159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168368370767) 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, 15551709 + ... + 16798582.

It is an arithmetic number, because the mean of its divisors is an integer number (5042100335974).

Almost surely, 2^{20168368370167} is an apocalyptic number.

20168368370167 is a deficient number, since it is larger than the sum of its proper divisors (32973729).

20168368370167 is an equidigital number, since it uses as much as digits as its factorization.

20168368370167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32973728.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 20168368370167 in words is "twenty trillion, one hundred sixty-eight billion, three hundred sixty-eight million, three hundred seventy thousand, one hundred sixty-seven".