168004121445831 has 32 divisors (see below), whose sum is σ = 244583268249600. Its totient is φ = 101731696541280.

The previous prime is 168004121445829. The next prime is 168004121445997. The reversal of 168004121445831 is 138544121400861.

168004121445831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168004121445831 - 2¹ = 168004121445829 is a prime.

It is a super-2 number, since 2×168004121445831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168004121445031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208979220 + ... + 209781606.

It is an arithmetic number, because the mean of its divisors is an integer number (7643227132800).

Almost surely, 2^{168004121445831} is an apocalyptic number.

168004121445831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

168004121445831 is a deficient number, since it is larger than the sum of its proper divisors (76579146803769).

168004121445831 is a wasteful number, since it uses less digits than its factorization.

168004121445831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807939.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 168004121445831 in words is "one hundred sixty-eight trillion, four billion, one hundred twenty-one million, four hundred forty-five thousand, eight hundred thirty-one".