166032020045231 has 2 divisors, whose sum is σ = 166032020045232. Its totient is φ = 166032020045230.

The previous prime is 166032020045189. The next prime is 166032020045321. The reversal of 166032020045231 is 132540020230661.

Together with next prime (166032020045321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166032020045231 - 2¹⁰ = 166032020044207 is a prime.

It is a super-2 number, since 2×166032020045231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166032020045191 and 166032020045200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166032020045831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83016010022615 + 83016010022616.

It is an arithmetic number, because the mean of its divisors is an integer number (83016010022616).

Almost surely, 2^{166032020045231} is an apocalyptic number.

166032020045231 is a deficient number, since it is larger than the sum of its proper divisors (1).

166032020045231 is an equidigital number, since it uses as much as digits as its factorization.

166032020045231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 166032020045231 its reverse (132540020230661), we get a palindrome (298572040275892).

The spelling of 166032020045231 in words is "one hundred sixty-six trillion, thirty-two billion, twenty million, forty-five thousand, two hundred thirty-one".