380865451616281 has 2 divisors, whose sum is σ = 380865451616282. Its totient is φ = 380865451616280.

The previous prime is 380865451616269. The next prime is 380865451616303. The reversal of 380865451616281 is 182616154568083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209231451577225 + 171634000039056 = 14464835^2 + 13100916^2 .

It is a cyclic number.

It is not a de Polignac number, because 380865451616281 - 2¹⁷ = 380865451485209 is a prime.

It is a super-2 number, since 2×380865451616281² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (380865451616261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190432725808140 + 190432725808141.

It is an arithmetic number, because the mean of its divisors is an integer number (190432725808141).

Almost surely, 2^{380865451616281} is an apocalyptic number.

It is an amenable number.

380865451616281 is a deficient number, since it is larger than the sum of its proper divisors (1).

380865451616281 is an equidigital number, since it uses as much as digits as its factorization.

380865451616281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66355200, while the sum is 64.

The spelling of 380865451616281 in words is "three hundred eighty trillion, eight hundred sixty-five billion, four hundred fifty-one million, six hundred sixteen thousand, two hundred eighty-one".