164451433024189 has 2 divisors, whose sum is σ = 164451433024190. Its totient is φ = 164451433024188.

The previous prime is 164451433024141. The next prime is 164451433024243. The reversal of 164451433024189 is 981420334154461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149471823901689 + 14979609122500 = 12225867^2 + 3870350^2 .

It is a cyclic number.

It is not a de Polignac number, because 164451433024189 - 2¹³ = 164451433015997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164451433024289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82225716512094 + 82225716512095.

It is an arithmetic number, because the mean of its divisors is an integer number (82225716512095).

Almost surely, 2^{164451433024189} is an apocalyptic number.

It is an amenable number.

164451433024189 is a deficient number, since it is larger than the sum of its proper divisors (1).

164451433024189 is an equidigital number, since it uses as much as digits as its factorization.

164451433024189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 164451433024189 in words is "one hundred sixty-four trillion, four hundred fifty-one billion, four hundred thirty-three million, twenty-four thousand, one hundred eighty-nine".