168256164959 has 4 divisors (see below), whose sum is σ = 175571650416. Its totient is φ = 160940679504.

The previous prime is 168256164949. The next prime is 168256164971. The reversal of 168256164959 is 959461652861.

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

It is not a de Polignac number, because 168256164959 - 2²⁰ = 168255116383 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 (168256164949) 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, 3657742694 + ... + 3657742739.

It is an arithmetic number, because the mean of its divisors is an integer number (43892912604).

Almost surely, 2^168256164959 is an apocalyptic number.

168256164959 is a deficient number, since it is larger than the sum of its proper divisors (7315485457).

168256164959 is an equidigital number, since it uses as much as digits as its factorization.

168256164959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315485456.

The product of its digits is 27993600, while the sum is 62.

The spelling of 168256164959 in words is "one hundred sixty-eight billion, two hundred fifty-six million, one hundred sixty-four thousand, nine hundred fifty-nine".