168485271439 has 4 divisors (see below), whose sum is σ = 168488025624. Its totient is φ = 168482517256.

The previous prime is 168485271403. The next prime is 168485271523. The reversal of 168485271439 is 934172584861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934172584861 = 821 ⋅1137847241.

It is a cyclic number.

It is not a de Polignac number, because 168485271439 - 2²³ = 168476882831 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 (168485221439) 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, 1283197 + ... + 1408390.

It is an arithmetic number, because the mean of its divisors is an integer number (42122006406).

Almost surely, 2^168485271439 is an apocalyptic number.

168485271439 is a deficient number, since it is larger than the sum of its proper divisors (2754185).

168485271439 is an equidigital number, since it uses as much as digits as its factorization.

168485271439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754184.

The product of its digits is 11612160, while the sum is 58.

The spelling of 168485271439 in words is "one hundred sixty-eight billion, four hundred eighty-five million, two hundred seventy-one thousand, four hundred thirty-nine".