168084812481 has 4 divisors (see below), whose sum is σ = 224113083312. Its totient is φ = 112056541652.

The previous prime is 168084812477. The next prime is 168084812491. The reversal of 168084812481 is 184218480861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 168084812481 - 2² = 168084812477 is a prime.

It is a super-2 number, since 2×168084812481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168084812491) 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, 28014135411 + ... + 28014135416.

It is an arithmetic number, because the mean of its divisors is an integer number (56028270828).

Almost surely, 2^168084812481 is an apocalyptic number.

It is an amenable number.

168084812481 is a deficient number, since it is larger than the sum of its proper divisors (56028270831).

168084812481 is an equidigital number, since it uses as much as digits as its factorization.

168084812481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56028270830.

The product of its (nonzero) digits is 786432, while the sum is 51.

The spelling of 168084812481 in words is "one hundred sixty-eight billion, eighty-four million, eight hundred twelve thousand, four hundred eighty-one".