380865451485209 has 2 divisors, whose sum is σ = 380865451485210. Its totient is φ = 380865451485208.

The previous prime is 380865451485203. The next prime is 380865451485221. The reversal of 380865451485209 is 902584154568083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369715214880400 + 11150236604809 = 19227980^2 + 3339197^2 .

It is a cyclic number.

It is not a de Polignac number, because 380865451485209 - 2⁴⁴ = 363273265440793 is a prime.

It is not a weakly prime, because it can be changed into another prime (380865451485203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190432725742604 + 190432725742605.

It is an arithmetic number, because the mean of its divisors is an integer number (190432725742605).

Almost surely, 2^{380865451485209} is an apocalyptic number.

It is an amenable number.

380865451485209 is a deficient number, since it is larger than the sum of its proper divisors (1).

380865451485209 is an equidigital number, since it uses as much as digits as its factorization.

380865451485209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776000, while the sum is 68.

The spelling of 380865451485209 in words is "three hundred eighty trillion, eight hundred sixty-five billion, four hundred fifty-one million, four hundred eighty-five thousand, two hundred nine".