167852870561 has 4 divisors (see below), whose sum is σ = 167903295300. Its totient is φ = 167802445824.

The previous prime is 167852870531. The next prime is 167852870569. The reversal of 167852870561 is 165078258761.

167852870561 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: 165078258761 = 13 ⋅12698327597.

It can be written as a sum of positive squares in 2 ways, for example, as 54725584225 + 113127286336 = 233935^2 + 336344^2 .

It is a cyclic number.

It is not a de Polignac number, because 167852870561 - 2³⁴ = 150673001377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 167852870497 and 167852870506.

It is not an unprimeable number, because it can be changed into a prime (167852870569) 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, 25207376 + ... + 25214033.

It is an arithmetic number, because the mean of its divisors is an integer number (41975823825).

Almost surely, 2^167852870561 is an apocalyptic number.

It is an amenable number.

167852870561 is a deficient number, since it is larger than the sum of its proper divisors (50424739).

167852870561 is an equidigital number, since it uses as much as digits as its factorization.

167852870561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50424738.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 167852870561 in words is "one hundred sixty-seven billion, eight hundred fifty-two million, eight hundred seventy thousand, five hundred sixty-one".