168152180401 has 4 divisors (see below), whose sum is σ = 169885708132. Its totient is φ = 166418652672.

The previous prime is 168152180347. The next prime is 168152180431. The reversal of 168152180401 is 104081251861.

168152180401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104081251861 = 487 ⋅213719203.

It can be written as a sum of positive squares in 2 ways, for example, as 69314252176 + 98837928225 = 263276^2 + 314385^2 .

It is a cyclic number.

It is not a de Polignac number, because 168152180401 - 2²⁹ = 167615309489 is a prime.

It is a super-2 number, since 2×168152180401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168152180431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866763720 + ... + 866763913.

It is an arithmetic number, because the mean of its divisors is an integer number (42471427033).

Almost surely, 2^168152180401 is an apocalyptic number.

It is an amenable number.

168152180401 is a deficient number, since it is larger than the sum of its proper divisors (1733527731).

168152180401 is an equidigital number, since it uses as much as digits as its factorization.

168152180401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733527730.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 168152180401 in words is "one hundred sixty-eight billion, one hundred fifty-two million, one hundred eighty thousand, four hundred one".